Table of Contents

 
 
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
 

Form 10-Q
 
ý  QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended June 30, 2017March 31, 2018
 
OR
 
¨  TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from        to
 
Commission File No.  001-35912
 
EMERGE ENERGY SERVICES LP
(Exact name of registrant as specified in its charter)
 
Delaware 90-0832937
(State or other jurisdiction of
incorporation or organization)
 
(I.R.S. Employer
Identification No.)
   
6000 Western Place,5600 Clearfork Main Street, Suite 465,400, Fort Worth, Texas 7610776109 (817) 618-4020
(Address of principal executive offices) (Registrant’s telephone number, including area code)
 
Securities registered pursuant to Section 12(b) of the Act:
Title of Each Class Name of Each Exchange On Which Registered
Common Units Representing Limited Partner Interests New York Stock Exchange
 
Securities registered pursuant to Section 12(g) of the Act:  None
 
 
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    ý  Yes    o  No
 
Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    ý  Yes    o  No
 
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company, or an emerging growth company.  See the definitions of “large accelerated filer,” “accelerated filer,” and “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act.  (Check one)
Large-Accelerated Filer  o
 
Accelerated Filer  x
Non-Accelerated Filer  o
 
Smaller Reporting Company  o
  
Emerging growth company o
 
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o  Yes    o  No

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    o  Yes    ý  No
 
As of July 28, 2017, 30,150,782April 25, 2018, 31,006,173 common units were outstanding.
 

TABLE OF CONTENTS
 
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FORWARD-LOOKING STATEMENTS 
Certain statements and information in this Quarterly Report on Form 10-Q may constitute “forward-looking statements.”  The words “believe,” “expect,” “anticipate,” “plan,” “intend,” “foresee,” “should,” “would,” “could” or other similar expressions are intended to identify forward-looking statements, which are generally not historical in nature.  These forward-looking statements are based on our current expectations and beliefs concerning future developments and their potential effect on us.  While management believes that these forward-looking statements are reasonable as and when made, there can be no assurance that future developments affecting us will be those that we anticipate.  All comments concerning our expectations for future revenues and operating results are based on our forecasts for our existing operations and do not include the potential impact of any future acquisitions.  Our forward-looking statements involve significant risks and uncertainties (some of which are beyond our control) and assumptions that could cause actual results to differ materially from our historical experience and our present expectations or projections.  Important factors that could cause actual results to differ materially from those in the forward-looking statements include, but are not limited to, those summarized below: 
failure to secure or maintain contracts with our largest customers, or non-performance of any of those customers under the applicable contract;
competitive conditions in our industry;
the amount of frac sand we are able to excavate and process, which could be adversely affected by, among other things, operating difficulties and unusual or unfavorable geologic conditions;
the volume of frac sand we are able to sell;
the price at which we are able to sell frac sand;
changes in the long-term supply of and demand for oil and natural gas;
volatility of fuel prices;
unanticipated ground, grade or water conditions at our sand mines;
actions taken by our customers, competitors and third-party operators;
our ability to complete growth projects on time and on budget;
our ability to realize the expected benefits from recent acquisitions;
increasing costs and minimum contractual obligations relating to our transportation services and infrastructure;
inclement or hazardous weather conditions, including flooding, and the physical impacts of climate change;
environmental hazards;
industrial accidents;
changes in laws and regulations (or the interpretation thereof) related to the mining and hydraulic fracturing industries, silica dust exposure or the environment;
inability to acquire or maintain necessary permits or mining or water rights;
facility shutdowns in response to environmental regulatory actions;
inability to obtain necessary production equipment or replacement parts;
reduction in the amount of water available for processing;
technical difficulties or failures;
labor disputes and disputes with our excavation contractor;
late delivery of supplies;
difficulty collecting receivables;
inability of our customers to take delivery of our products;
changes in the price and availability of transportation;
fires, explosions or other accidents;
pit wall failures or rock falls;
the effects of future litigation; and
other factors discussed in this Quarterly Report on Form 10-Q and the detailed factors discussed under the heading “Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2016.2017.
When considering forward-looking statements, you should keep in mind the known material risk factors and other cautionary statements set forth in our Annual Report on Form 10-K for the year ended December 31, 20162017 in “Risk Factors” and in this Form 10-Q in “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and “Risk Factors.”  Readers are cautioned not to place undue reliance on forward-looking statements, which speak only as of the date hereof.  We undertake no obligation to publicly update or revise any forward-looking statements after the date they are made, whether as a result of new information, future events or otherwise.


PART I                                          FINANCIAL INFORMATION

ITEM 1.                                     FINANCIAL STATEMENTS
 
EMERGE ENERGY SERVICES LP
UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS
($ in thousands, except unit data)
 
June 30, 2017 December 31, 2016 March 31, 2018 December 31, 2017 
ASSETS        
Current assets:        
Cash and cash equivalents$189
 $4
 $8,689
 $5,729
 
Trade and other receivables, net42,539
 25,103
 66,768
 56,951
 
Inventories21,273
 17,457
 14,889
 27,825
 
Prepaid expenses and other current assets6,970
 11,374
 8,173
 6,331
 
Total current assets70,971
 53,938
 98,519
 96,836
 
        
Property, plant and equipment, net181,445
 165,484
 203,813
 185,970
 
Intangible assets, net3,223
 4,781
 570
 1,664
 
Other assets, net25,209
 25,330
 22,563
 24,422
 
Non-current assets held for sale202
 371
 
Total assets$281,050
 $249,904
 $325,465
 $308,892
 
        
LIABILITIES AND PARTNERS’ EQUITY        
Current liabilities:        
Accounts payable$25,599
 $11,221
 $21,976
 $18,819
 
Accrued liabilities13,976
 11,629
 16,012
 29,718
 
Current portion of long-term debt8,063
 
 
Total current liabilities39,575
 22,850
 46,051
 48,537
 
        
Long-term debt, net of current portion168,690
 134,012
 195,690
 176,351
 
Business acquisition obligation, net of current portion6,303
 8,063
 4,553
 5,013
 
Other long-term liabilities28,680
 30,323
 22,228
 29,882
 
Total liabilities243,248
 195,248
 268,522
 259,783
 
        
Commitments and contingencies

 

 

 

 
Preferred units - Series A - Par value of $1,000: 0 units and 10,000 units issued and outstanding as of June 30, 2017 and December 31, 2016, respectively
 6,914
 
Partners’ equity:        
General partner
 
 
 
 
Limited partner common units - 30,147,725 units and 29,076,456 units issued and outstanding as of June 30, 2017 and December 31, 2016, respectively37,802
 47,742
 
Limited partner common units - 31,006,173 units and 30,174,940 units issued and outstanding as of March 31, 2018 and December 31, 2017, respectively56,943
 49,109
 
Total partners’ equity37,802
 47,742
 56,943
 49,109
 
Total liabilities and partners’ equity$281,050
 $249,904
 $325,465
 $308,892
 
 
See accompanying notes to unaudited condensed consolidated financial statements.


EMERGE ENERGY SERVICES LP
UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
($ in thousands, except unit and per unit data)
 
Three Months Ended June 30, Six Months Ended June 30, Three Months Ended March 31, 
2017 2016 2017 2016 2018 2017 
Revenues$82,602
 $24,825
 $157,946
 $54,495
 $106,750
 $75,344
 
Operating expenses: 
  
      
  
 
Cost of goods sold (excluding depreciation, depletion and amortization)71,428
 38,354
 143,739
 82,144
 80,242
 72,311
 
Depreciation, depletion and amortization5,675
 4,870
 10,331
 9,777
 4,861
 4,656
 
Selling, general and administrative expenses6,850
 4,459
 12,728
 11,234
 8,571
 5,878
 
Contract and project terminations
 10
 
 4,036
 1,689
 
 
Total operating expenses83,953
 47,693
 166,798
 107,191
 95,363
 82,845
 
Operating income (loss)(1,351) (22,868) (8,852) (52,696) 11,387
 (7,501) 
Other expense (income):            
Interest expense, net5,082
 5,283
 8,280
 9,877
 10,492
 3,198
 
Other(3,008) (2) (2,317) (3) (688) 691
 
Total other expense2,074
 5,281
 5,963
 9,874
 9,804
 3,889
 
Income (loss) from continuing operations before provision for income taxes(3,425) (28,149) (14,815) (62,570) 1,583
 (11,390) 
Provision (benefit) for income taxes
 1
 
 21
 97
 
 
Net income (loss) from continuing operations(3,425) (28,150) (14,815) (62,591) 
Income (loss) from discontinued operations, net of taxes(2,657) 5,253
 (2,657) 5,479
 
Net income (loss)$(6,082) $(22,897) $(17,472) $(57,112) $1,486
 $(11,390) 
    

 

     
Basic and diluted earnings (loss) per unit (1):        
Earnings (loss) per common unit from continuing operations$(0.11) $(1.17) $(0.49) $(2.59) 
Earnings (loss) per common unit from discontinued operations(0.09) 0.22
 (0.09) 0.23
 
Basic and diluted earnings (loss) per common unit$(0.20) $(0.95) $(0.58) $(2.36) 
Earnings (loss) per common unit (1)    
Basic earnings (loss) per common unit$0.05
 $(0.38) 
Diluted earnings (loss) per common unit$0.05
 $(0.38) 
            
Weighted average number of common units outstanding - basic and diluted (1)30,147,725
 24,129,418
 30,104,613
 24,125,320
 
        
(1) See Note 9.        
Weighted average number of common units outstanding - basic31,212,968
 30,061,022
 
Weighted average number of common units outstanding - diluted31,371,382
 30,061,022
 
(1) See Note 8.    

 
See accompanying notes to unaudited condensed consolidated financial statements.


EMERGE ENERGY SERVICES LP
UNAUDITED CONDENSED CONSOLIDATED STATEMENT OF PREFERRED UNITS AND PARTNERS’ EQUITY
($ in thousands)
 
 Limited Partner Common Units General Partner
(non-economic 
interest)
 Total Partners’ Equity Preferred Units 
         
Balance at December 31, 2016$47,742
 $
 $47,742
 $6,914
 
Net loss(17,472) 
 (17,472) 
 
Equity-based compensation677
 
 677
 
 
Conversion of preferred units6,914
 
 6,914
 (6,914) 
Other(59) 
 (59) 
 
Balance at June 30, 2017$37,802
 $
 $37,802
 $
 
 Limited Partner Common Units General Partner
(non-economic 
interest)
 Total Partners’ Equity 
       
Balance at December 31, 2017$49,109
 $
 $49,109
 
Net income1,486
 
 1,486
 
Equity-based compensation434
 
 434
 
Issuance of equity5,974
 
 5,974
 
Other(60) 
 (60) 
Balance at March 31, 2018$56,943
 $
 $56,943
 
 
See accompanying notes to unaudited condensed consolidated financial statements.


EMERGE ENERGY SERVICES LP
UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
($ in thousands) 
Six Months Ended June 30, Three Months Ended March 31, 
2017 2016 2018 2017 
Cash flows from operating activities:        
Net income (loss)$(17,472) $(57,112) $1,486
 $(11,390) 
Adjustments to reconcile net income (loss) to net cash flows from operating activities: 
  
  
  
 
Depreciation, depletion and amortization10,331
 12,131
 4,861
 4,656
 
Equity-based compensation expense677
 136
 434
 347
 
Project and contract termination costs - non-cash portion
 4,011
 
Unrealized gain on fair value of warrant(2,312) 
 
Write-down of escrow receivable2,657
 
 
Project and contract termination costs1,689
 
 
Unrealized (gain) loss on fair value of warrant(677) 696
 
Provision for doubtful accounts
 1,746
 3
 
 
Loss (gain) on disposal of assets79
 76
 2
 (6) 
Amortization of debt discount/premium and deferred financing costs1,835
 1,506
 4,528
 663
 
Write-down of inventory
 5,394
 
Unrealized (gain) loss on derivative instruments(214) 665
 
 (149) 
Other non-cash58
 59
 
Other non-cash charges30
 29
 
Changes in operating assets and liabilities:        
Accounts receivable(17,437) 6,845
 (9,815) (15,609) 
Inventories(3,816) 8,135
 12,936
 4,204
 
Prepaid expenses and other current assets1,748
 1,643
 (1,843) (784) 
Accounts payable and accrued liabilities16,573
 1,560
 (3,155) 4,194
 
Other assets120
 173
 265
 210
 
Cash flows from operating activities:(7,173) (13,032) 
Cash flows from operating activities10,744
 (12,939) 
        
Cash flows from investing activities:        
Purchases of property, plant and equipment(3,403) (11,010) (30,102) (1,399) 
Net proceeds from disposal of assets211
 (9) 9
 7
 
Asset acquisition(20,430) 
 
Collection of notes receivable
 7
 
Cash flows from investing activities:(23,622) (11,012) 
Cash flows from investing activities(30,093) (1,392) 
        
Cash flows from financing activities:        
Proceeds from line of credit borrowings154,820
 141,345
 9,510
 76,100
 
Proceeds from second lien term loan39,597
 
 175,000
 
 
Repayment of line of credit borrowings(158,593) (130,451) (143,700) (57,929) 
Repayment of other long-term debt(5,882) 
 
Payment of business acquisition obligation(1,799) (382) (595) (1,519) 
Payment of financing costs(2,982) (4,177) (11,964) (163) 
Other financing activities(63) (3) (60) (63) 
Cash flows from financing activities:30,980
 6,332
 
Cash flows from financing activities22,309
 16,426
 
        
Cash and cash equivalents:        
Net increase (decrease)185
 (17,712) 2,960
 2,095
 
Balance at beginning of period4
 20,870
 5,729
 4
 
Balance at end of period$189
 $3,158
 $8,689
 $2,099
 
 See accompanying notes to unaudited condensed consolidated financial statements.


EMERGE ENERGY SERVICES LP
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)
 
1.             ORGANIZATION AND BASIS OF PRESENTATION 
Organization 
Emerge Energy Services LP (“Emerge”) is a Delaware limited partnership that completed its initial public offering (“IPO”) on May 14, 2013 to become a publicly traded partnership.  The combined entities of Superior Silica Sands LLC (“SSS”), a Texas limited liability company and Emerge Energy Services Operating LLC (“Emerge Operating”), a Delaware limited liability company, currently represent Emerge. 
References to the “Partnership,” “we,” “our” or “us” refer collectively to Emerge and all of its subsidiaries.
We are a growth-oriented energy services company engaged in the business of mining, producing,processing, and distributing silica sand, that is a key input for the hydraulic fracturing of oil and gas wells. We conduct our operations through our subsidiary SSS, and we believe our Superior Silica Sands brand has name recognition and a positive reputation with our customers. The Sand business conducts mining and processing operations from facilities located in Wisconsin and Texas.  In addition to mining and processing silica sand for the oil and gas industry, the Sand business sells its product for use in building products and foundry operations. 
The FuelWe previously owned a fuel business that operated transmix processing facilities located in the Dallas-Fort Worth area and in Birmingham, Alabama.  The Fuel business also offered third-party bulk motor fuel storage and terminal services, biodiesel refining, sale and distribution of wholesale motor fuels, reclamation services (which consists primarily of cleaning bulk storage tanks used by other petroleum terminal and others) and blending of renewable fuels.
On August 31, 2016, we completed the sale of our Fuel business pursuant to an Amended and Restated Purchase and Sale Agreement, dated August 31, 2016 (the “Restated Purchase Agreement”), with Susser Petroleum Operating Company LLC and Sunoco LP (together, “Sunoco”). Sunoco paid Emerge a purchase price of $167.7 million in cash (subject to certain working capital and other adjustments in accordance with the terms of the Restated Purchase Agreement), of which $14.25 million was placed into several escrow accounts to satisfy potential claims from Sunoco for indemnification under the Restated Purchase Agreement. During the second quarter of 2017, we received the entire $2.25 million of the Renewable Fuel Standard escrow. Additionally, we wrote off $2.7 million of the hydrotreator and pipeline escrow receivables relating to completion delays and cost overruns. Any escrowed funds remaining after certain periods of time set forth in the Restated Purchase Agreement will be released to Emerge, provided that no unsatisfied indemnity claims exist at such time.
The results of operations of the Fuel business have been classified as discontinued operations for all periods presented. We now operate our continuing business in a single sand segment. We report silica sand operations as our continuing operations and fuel operations as our discontinued operations. 
Basis of Presentation and Consolidation 
The accompanying unaudited condensed consolidated financial statements were prepared using generally accepted accounting principles for interim financial information and the instructions to Form 10-Q and Regulation S-X. Accordingly, these financial statements do not include all information or notes required by generally accepted accounting principles for annual financial statements and should be read together with our 20162017 Annual Report on Form 10-K. These financial statements include the accounts of all of our subsidiaries. All significant intercompany transactions and balances have been eliminated in consolidation. In the opinion of management, all adjustments and disclosures necessary for a fair presentation of these interim statements have been included.
Reclassifications
Certain reclassifications have been made to prior period amounts to conform to the current period presentation. These reclassifications do not impact net income and do not reflect a material change in the information previously presented in our Condensed Consolidated Statements of Operations.
2.             ASSET ACQUISITION
On April 12, 2017, we closed the transaction to acquire substantially all of the assets of Materials Holding Company, Inc., Osburn Materials, Inc., Osburn Sand Co. and South Lehr, Inc. (collectively “Osburn Materials”) for $20 million. The transaction was funded with a new $40 million term loan. Osburn MaterialsThe San Antonio site is located approximately 25 miles south of San Antonio, Texas, and producespreviously produced and sells sandsold construction, foundry and construction materialssports sands, but did not serve the energy markets. We upgraded the existing operations for conversion into frac sand salesproduction and commenced frac sand productinproduction in July 2017. Osburn Materials’ current sandOur San Antonio site’s reserves which consistsconsist mostly of 40/70 and 100 mesh fine sands meetsand meet American Petroleum Institute (“API”) specifications for all grades.

We early adopted the provisions of ASCAccounting Standards Codification (“ASC”) 805, Business Combinations and Accounting Standards Update (“ASU”) 2017-01,Business Combinations (Topic 805): Clarifying the Definition of a Business, in accounting for this transaction. Under this guidance, if substantially all of the fair value of the gross assets acquired is concentrated in a single asset or group of similar assets, the transaction can be accounted for as an asset purchase. Based on our analysis of the transaction, we believe that substantially all of the fair value is concentrated in the sand reserves acquired, and thus we accounted for the transaction as an asset purchase.
Significant judgment is often required in estimating the fair values of assets acquired. We engaged a third-party valuation specialist in estimating fair values of the assets acquired. We used our best estimates and assumptions to allocate the cost of the acquisition to the assets acquired on a relative fair value basis at the acquisition date. The preliminary fair value estimates are based on available historical information and on expectations and assumptions about the future production and sales volumes, market demands, the average selling price of sand, and the discount factor used in estimating future cash flows. While we believe those expectations and assumptions are reasonable, they are inherently uncertain. Additionally, we are finalizing the sand reserves estimates. Transaction costs of $434,000 incurred for the acquisition are capitalized as a component of the cost of the assets acquired.

3.OTHER FINANCIAL DATA
Adoption of ASC 606, Revenue from Contracts with Customers
In May 2014, the Financial Accounting Standards Board (“FASB”) issued ASU 2014-09, Revenue from Contracts with Customers, ASC 606. The new revenue recognition standard provides a five-step analysis of transactions to determine when and how revenue is recognized. The core principle is that a company should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. It also requires entities to disclose both quantitative and qualitative information that enable financial statements users to understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. ASC 606 replaced most existing revenue recognition guidance in United States Generally Accepted Accounting Principles (“GAAP”) when it became effective for fiscal years beginning after December 15, 2017. ASC 606 permits the use of either the retrospective or cumulative effect transition method. We conducted and completed a comprehensive review of contracts and their associated business terms and conditions and performed detailed analyses on the impact of this standard to our contracts. Based on our evaluation, we adopted the new standard on January 1, 2018, using the full retrospective method. Because accounting for revenue under contracts did not materially change for us under the new standard as explained below, prior period consolidated financial statements did not require adjustment.
We recognize revenue at a point in time when obligations under the terms of a contract with our customer are satisfied. This occurs with the transfer of control of our products to customers when products are shipped for direct sales to customers or when the product is picked up by a customer either at our plant location or transload location. Our contracts contain one performance obligation which is the delivery of sand to the customer at a point in time. Revenue is measured as the amount of consideration we expect to receive in exchange for transferring products. We recognize the cost for shipping as an expense in cost of sales when control over the product has transferred to the customer. Sales taxes collected concurrently with revenue-producing activities are excluded from revenue.
Our sand products are sold to United States and Canada-based customers primarily in the energy industry. Demand for our product is impacted by the economic conditions related to the energy industry, particularly fluctuations in oil and gas prices. This affects the nature, amount, timing and uncertainty of our revenue. Changes in the price of oil and gas relative to other inflationary measures could make our products more or less affordable and therefore affect our sales. We also sell a small quantity of non-frac sand to customers outside the energy industry.
Our payment terms vary by the type and location of our customers. The term between invoicing and the payment due date is 30 days in most cases. For certain customers, we require payment before the product is delivered.
The assets acquiredfollowing table presents our revenues disaggregated by nature of product:
 Three Months Ended 
 March 31, 2018 March 31, 2017 
 $ in thousands Tons in thousands $ in thousands Tons in thousands 
         
Frac sand revenues$105,971
 1,437
 $75,182
 1,245
 
Non-frac sand revenues779
 66
 162
 6
 
Total revenues$106,750
 1,503
 $75,344
 1,251
 
We maintain an allowance for doubtful accounts to reflect estimated losses resulting from the failure of customers to make required payments. On an ongoing basis, the collectability of accounts receivable is assessed based upon historical collection trends, current economic factors and the assessment of the collectability of specific accounts. We evaluate the collectability of specific accounts and determine when to grant credit to our customers using a combination of factors, including the age of the outstanding balances, evaluation of customers’ current and past financial condition, recent payment history, current economic environment, and discussions with our personnel and with the customers directly. Accounts are written off when it is determined the receivable will not be collected. If circumstances change, our estimates of the collectability of amounts could change by a material amount.
A limited number of our contracts have been includedvariable consideration, including shortfall fees and demurrage fees. For a limited number of customers, we sell under long-term, minimum purchase supply agreements. These agreements define, among other commitments, the volume of product that our customers must purchase, the volume of product that we must provide, and the price that we will charge for each product. The shortfall fees are billed when the customer does not meet the minimum purchases over a period of time defined in each contract. As we do not have the ability to predict the customer’s orders over the period, there are constraints around our consolidated balance sheets as of June 30, 2017ability to recognize the variability in consideration related to this condition. Demurrage fees are assessed to customers for not returning the railcar timely and will be depreciated and depleted according to the policies described interms of the contract. Estimation of demurrage fees is also constrained as we cannot estimate when the customer will pick up the product from the railcar upon delivery. Shortfall fees and demurrage

represent an immaterial amount of revenue historically. For these contracts we estimate our Annual Reportposition quarterly using the most likely outcome method, including customer-provided forecasts and historical buying patterns, and we accrue for any asset or liability these arrangements may create. The effect of accruals for variable consideration on Form 10-K for the year ended December 31, 2016.our consolidated financial statements is immaterial.
3. DISCONTINUED OPERATIONS
At March 31, 2016, the assetsAfter a thorough and liabilitiesextensive analysis of all of our Fuel business were classified as held for salelong-term, minimum purchase supply agreements and a review of the resultsstandard terms of operations have been classified as discontinued operations for all periods presentedthe purchase orders, we determined that there is no material change in accordance with ASU 2014-08, Reporting Discontinued Operationsthe transaction price and Disclosures of Disposals of Components of an Entity.
The following corporate costs wereamounts allocated to discontinued operationsperformance obligations, or the timing of satisfaction of performance obligations under ASC 606 compared to our accounting for all periods presented:these items in previous periods.
Interest on the revolver was allocated to the discontinued operations based on the allocation of debt between Sand and Fuel business.
Equity-based compensation costs recognized for the Fuel business employees were allocated to discontinued operations.
The taxes paid on behalf of the Fuel business were compiled by review of prior tax filings and payments. These amounts were allocated to discontinued operations.
General corporate overhead costs were not allocated to discontinued operations.
Summarized results of the discontinued operations for the three and six months ended June 30, 2017 and 2016 are as follows :
 Three Months Ended June 30, Six Months Ended June 30, 
         
 2017 2016 2017 2016 
         
 ($ in thousands) 
Revenues (1)$
 $101,982
 $
 $182,463
 
Cost of goods sold (excluding depreciation, depletion and amortization) (1)
 93,844
 
 169,544
 
Depreciation and amortization
 
 
 2,354
 
Selling, general and administrative expenses
 2,194
 
 3,792
 
Interest expense, net
 686
 
 1,283
 
Other expenses2,657
 
 2,657
 
 
Income from discontinued operations before provision for income taxes(2,657) 5,258
 (2,657) 5,490
 
Provision for income taxes
 5
 
 11
 
Income from discontinued operations, net of taxes$(2,657) $5,253
 $(2,657) $5,479
 
         
(1) Fuel revenues and cost of goods sold include excise taxes and similar taxes:$
 $13,405
 $
 $26,488
 
Discontinued Operations
On August 31, 2016, we completed the sale of our Fuel business pursuant to the terms of the RestatedFuel Business Purchase Agreement. The purchase price was $167.7 million, subject to adjustment based on actual working capital conveyed at closing. The following escrow accounts were established at closing:
Table of contents

$7 million of the sales price was withheld as a general escrow associated with certain indemnification obligations. Any unutilized escrow balance, plus any accrued interest thereon, will be paid 54 months from the closing date.
$4 million of the sales price was withheld as a hydrotreater escrow to satisfy any cost overruns of the Birmingham hydrotreater completion. In June 2017, we wrote off a $2.5 million of thisthe entire receivable relating to hydrotreator completion delays and cost overruns. This non-cash charge is included in Other expenses in our results of discontinued operations. Any unutilized escrow balance, along with any accrued interest thereon, will be paid 60 days after the substantial completion of the Birmingham hydrotreater.
$2.25 million of the sales price was withheld as the Renewable Fuel Standard escrow account. The entire amount, along with interest thereon, was collected in April 2017.
$1 million of the sales price was withheld as a pipeline escrow account. As of June 30, 2017, we estimated our receivable at $850,000. This non-cash charge is included in Other expenses in our results of discontinued operations Any unutilized escrow balance, along with any accrued interest thereon, will be released with the general escrow.
Escrow receivables are recorded at the net present values of estimated future recoveries and will be adjusted as contingencies are resolved.
The following table represents the gain on sale from the Fuel business recognized in the third quarter of 2016 (in thousands).
Purchase price$167,736
 
Adjustments:  
Working capital true-up3,398
 
Other adjustments(2,911) 
General escrow(7,000) 
Hydrotreater escrow(4,000) 
Other escrow(3,250) 
Net proceeds153,973
 
Less:  
Net book value of assets and liabilities sold(125,317) 
Escrow receivable10,597
 
Transaction costs including commissions(7,679) 
Other receivables125
 
Gain on sale of Fuel business$31,699
 
4.OTHER FINANCIAL DATA
Private Placement
On August 8, 2016, we entered into the Purchase AgreementIn connection with the Purchaser to issue and sell to the Purchaser in aour private placement an aggregate principal amount of $20 million of our Series A Preferred Units and a Warrant that may be exercised to purchase common units representing limited partner interests in the Partnership.
The first half of the Preferred Units converted into 993,049 common units on November 3,August 2016, and the second half converted to 985,222 common units on February 15, 2017.
We alsowe issued to the Purchaserpurchaser a warrant to purchase approximately 890,000 common units at an exercise price of $10.82 per common unit. The Warrant,warrant, which expires on August 16, 2022, was exercisable immediately upon issuance and contains a cashless exercise provision and other customary provisions and protections, including anti-dilution protections. This warrant is classified as a liability in accordance with ASC 480, Distinguishing Liabilities from Equity, and is included in Other long-term liabilities on our Condensed Consolidated Balance Sheets. This warrant has not been exercised as of June 30, 2017.March 31, 2018.
Public Offering
In November 2016, we completed a public offering of 3,400,000 of our common units at a price of $10.00 per unit and granted the underwriters an option to purchase up to an additional 510,000 common units, which the underwriter exercised in full. The offering closed on November 23, 2016. We received proceeds (net of underwriting discounts and offering expenses) from the offering of approximately $36.9 million.  The net proceeds from this offering were used to repay outstanding borrowings under our revolving Credit Agreement.

Allowance for Doubtful Accounts 
We had no allowance for doubtful accounts at June 30, 2017. The allowance for doubtful accounts totaled $3.1 million$17.0 thousand at March 31, 2018, and December 31, 2016.2017.
Inventories 
Inventories consisted of the following: 
June 30, 2017 December 31, 2016 March 31, 2018 December 31, 2017 
        
($ in thousands) ($ in thousands) 
Sand finished goods$11,777
 $9,631
 $9,959
 $12,914
 
Sand work in process9,220
 7,597
 4,751
 14,650
 
Sand raw materials and supplies276
 229
 179
 261
 
Total$21,273
 $17,457
 $14,889
 $27,825
 
 
During the first quarter of 2016, we wrote down $5.4 million of our sand inventory based on our lower of cost or market analysis. We attributed this write-down to declining market conditions and a significant decline in prices.
Prepaid expenses and other current assets
Prepaid expenses and other current assets consisted of the following: 
June 30, 2017 December 31, 2016 March 31, 2018 December 31, 2017 
        
($ in thousands) ($ in thousands) 
Prepaid lease assets, current$2,577
 $3,408
 
Prepaid mining costs$3,381
 $1,011
 
Prepaid lease assets, current (1)2,415
 2,496
 
Prepaid insurance968
 826
 772
 875
 
Escrow receivable, current468
 5,253
 
Prepaid transload services693
 1,274
 
Other2,957
 1,887
 912
 675
 
Total$6,970
 $11,374
 $8,173
 $6,331
 
(1)The cost to transport leased railcars from the manufacturer to our site for initial placement in service is capitalized and amortized over the term of the lease (typically five to seven years). This balance reflects the current portion of these capitalized costs.
Property, Plant and Equipment 
Property, plant and equipment consisted of the following: 
June 30, 2017 December 31, 2016 March 31, 2018 December 31, 2017 
        
($ in thousands) ($ in thousands) 
Machinery and equipment (1)$92,849
 $90,035
 $92,925
 $92,353
 
Buildings and improvements (1)66,190
 66,190
 66,545
 66,444
 
Mineral reserves49,091
 49,091
 
Land and improvements (1)45,567
 45,065
 47,597
 45,567
 
Mineral reserves49,091
 30,181
 
Construction in progress4,272
 1,878
 34,870
 15,696
 
Capitalized reclamation costs2,521
 2,445
 2,521
 2,521
 
Total cost260,490
 235,794
 293,549
 271,672
 
Accumulated depreciation and depletion79,045
 70,310
 89,736
 85,702
 
Net property, plant and equipment$181,445
 $165,484
 $203,813
 $185,970
 
(1) Includes assets under capital lease.
We classified $202,000$393,000 and $371,000 to$292,000 as assets held for sale as of June 30, 2017March 31, 2018, and December 31, 2016.2017.
We recognized $8.8$4.1 million and $9.1$3.9 million of depreciation and depletion expense for the sixthree months ended June 30,March 31, 2018, and 2017, and 2016, respectively. Depreciation and depletion expense for continuing operations totaled $8.3 million for the six months ended June 30, 2016.


Intangible Assets
Our intangible assets consisted of the following:
Cost 
Accumulated 
Amortization
 Net Cost 
Accumulated 
Amortization
 Net 
            
($ in thousands) ($ in thousands) 
June 30, 2017:      
March 31, 2018:      
Patents$7,443
 $6,936
 $507
 
Non-compete agreement100
 37
 63
 
Total$7,543
 $6,973
 $570
 
      
December 31, 2017:      
Patents$7,443
 $4,691
 $2,752
 $7,443
 $6,188
 $1,255
 
Supply and transportation agreements569
 169
 400
 569
 226
 343
 
Non-compete agreement100
 29
 71
 100
 34
 66
 
Total$8,112
 $4,889
 $3,223
 $8,112
 $6,448
 $1,664
 
      
December 31, 2016:      
Patents$7,443
 $3,195
 $4,248
 
Supply and transportation agreements569
 112
 457
 
Non-compete agreement100
 24
 76
 
Total$8,112
 $3,331
 $4,781
 
We recognized $1.6 million and $3.0$0.8 million of amortization expense for each of the sixthree months ended June 30, 2017March 31, 2018 and 2016, respectively.2017. Amortization expense for continuing operations totaled $1.5 million for the six months ended June 30, 2016.

Other Assets, Net 
Other assets, net consisted of the following:
June 30, 2017 December 31, 2016 March 31, 2018 December 31, 2017 
        
($ in thousands) ($ in thousands) 
Deferred lease asset (1)$8,801
 $8,826
 $8,763
 $8,775
 
Prepaid lease assets, net of current portion (2)8,450
 8,616
 6,575
 7,153
 
Escrow receivable, non-current (3)5,510
 5,459
 5,772
 5,684
 
Other2,448
 2,429
 1,453
 2,810
 
Total$25,209
 $25,330
 $22,563
 $24,422
 
(1)During 2016, we completed negotiations with various railcar lessors pursuant to which we terminated future orders of railcars, deferred future railcar deliveries and reduced and deferred payments on existing leases. The cost of deferring future railcar deliveries was recorded as a deferred lease asset. This asset will be amortized over the terms of the associated leases as those railcars enter service.
(2)The cost to transport leased railcars from the manufacturer to our site for initial placement in service is capitalized and amortized over the term of the lease (typically five to seven years). This balance reflects the non-current portion of these capitalized costs.
(3)Non-current receivables are recorded at net present value of estimated recoveries and will be adjusted as contingencies are resolved. See Note 3 - Discontinued Operations.

Accrued Liabilities 
Accrued liabilities consisted of the following:
June 30, 2017 December 31, 2016 March 31, 2018 December 31, 2017 
        
($ in thousands) ($ in thousands) 
Logistics$2,816
 $5,898
 
Fuel sale related liabilities2,478
 2,475
 
Current portion of business acquisition obligations1,790
 1,952
 
Mining1,544
 170
 
Salaries and other employee-related1,209
 4,633
 
Sales, excise, property and income taxes871
 1,953
 
Deferred compensation848
 848
 
Sand purchases and royalties$3,430
 $517
 768
 311
 
Fuel sale related-liabilities2,474
 2,784
 
Salaries and other employee-related2,250
 710
 
Current portion of business acquisition obligations1,666
 1,703
 
Deferred compensation848
 848
 
Sales, excise, property and income taxes730
 136
 
Accrued interest430
 641
 578
 2,552
 
Construction434
 7,122
 
Professional fees200
 373
 
Current portion of contract termination210
 160
 85
 210
 
Logistics204
 1,814
 
Other1,734
 2,316
 2,391
 1,221
 
Total$13,976
 $11,629
 $16,012
 $29,718
 

Other Long-term Liabilities
Other long-term liabilities consisted of the following:
June 30, 2017 December 31, 2016 March 31, 2018 December 31, 2017 
        
($ in thousands) ($ in thousands) 
Deferred lease obligation (1)$11,033
 $9,561
 
Long-term promissory note$8,914
 $8,480
 5,370
 9,370
 
Deferred lease obligation (1)6,992
 5,858
 
Asset retirement obligation2,814
 2,792
 
Warrants2,134
 2,811
 
Contract and project terminations5,305
 5,319
 877
 5,348
 
Stock warrants4,707
 7,019
 
Asset retirement obligation2,762
 2,647
 
Other
 1,000
 
Total$28,680
 $30,323
 $22,228
 $29,882
 
(1)We recognize lease expense for operating leases on a straight-line basis over the term of the lease, beginning on the date we take possession of the property. The difference between the cash paid to the lessor and the amount recognized as lease expense on a straight-line basis is included in deferred lease obligation.
Long-term Promissory Note
During the second quarter of 2016, we negotiated significant concessions on the majority of our railcar leases pursuant to which we cancelled or deferred deliveries on rail cars and reduced cash payments on a substantial portion of the existing rail cars in our fleets. In exchange offor these concessions, we issued at par an Unsecured Promissory Noteunsecured promissory note in the aggregate principal amount of $8 million (the “PIK Note”) for delivery deferrals. The PIK Note bears interest at a rate of 10% per annum payable in cash or, in certain situations, in-kind, when certain financial metrics have been met. The PIKWe began paying interest in cash as of January 1, 2018. This Note will mature on June 2, 2020. We paid $1.5 million of the principal balance during the three months ended March 31, 2018, as part of our debt refinancing described in Note 4 to our Condensed Consolidated Financial Statements. We also issued warrants to purchase 370,000 common units representing limited partnership interests in the Partnership in exchange offor these concessions during the second quarter of 2016.
Contract and Project Terminations
In December 2015, we gained access to a significant reserve base in Jackson County, Wisconsin through a business arrangement with a contracted customer. The assets acquired included certain owned and leased land, sand deposit leases and related prepaid royalties, and transferable mining and reclamation permits. In consideration for the assets, we amended and restated the existing supply agreement between the parties and entered into a new sand purchase option agreement that provided the customer with a market-based discount on sand purchased from us. Under the agreements, we have the option to supply the contracted tons from our existing footprint of northern white sand operations or construct a new sand mine and dry plant in Jackson County, Wisconsin. Due to changing market conditions and changing preferences of customer demand, we determined that these projects were no longer economically viable and decided to terminate the land owner agreements and the mine permits. We recorded a $1.9 million charge to earnings to write off the related prepaid royalties during the three months ended March 31, 2018. As we terminated our permits for these properties, we will not owe any future royalty payments related to these properties.
During 2016, we negotiated concessions on the majority of our railcar leases pursuant to which we cancelled or deferred deliveries on rail cars and reduced cash payments on a substantial portion of the existing rail cars in our fleets. In exchange for these concessions, we incurred a contract termination charge of $4 million. We issued at par an Unsecured Promissory Noteunsecured promissory note in the aggregate principal amount of $4 million with interest payable in cash or, in certain situations, in-kind, when certain financial metrics have been met. This note bearsbore interest at a rate of five percent per annumannum. We fully extinguished this liability and is due and payable within 30 days following the date on which financial statements are publicly available covering the first date on which these financial metrics have been met.

paid $4.4 million in January 2018 as part of our debt refinancing described in Note 4 to our Condensed Consolidated Financial Statements.
The following table illustrates the various contract termination liabilities and exit and disposal reserves included in Accrued liabilities and Other long-term liabilities in our Condensed Consolidated Balance Sheets:
($ in thousands) ($ in thousands) 
Balance at December 31, 2016$5,479
 
Balance at December 31, 2017$5,557
 
Adjustments(221) 
Accretion121
 8
 
Payments(85) (4,382) 
Balance at June 30, 2017$5,515
 
Balance at March 31, 2018$962
 

Mining and Wet Sand Processing Agreement
In April 2014, a five-year contract with a sand processor (“Processor”) became effective to support our Sand business in Wisconsin. In January 2015, the agreement was amended and extended to expire inon December 31, 2021. Under this contract, the Processor financed and built a wet wash processing plant near our Wisconsin operations. As part of the agreement, the Processor wet washes our sand, creates stockpiles of washed sand and maintains the plant and equipment. During the term of the agreement the Processor will own the wet plant along with the equipment and other temporary structures used to support this activity. At the end of the term of the agreement or following a default under the contract by the Processor, we have the right to take ownership of the wet plant and other equipment without charge. Subject to certain conditions, ownership of the plant and equipment will transfer to us at the expiration of the term. We accounted for the wet plant as a capital lease obligation. The original capitalized lease asset and corresponding capital lease obligation totaled $3.3 million. As of June 30, 2017, we do not have any liability for capital lease obligation.
Fair Value Measurements
Our financial instruments consist primarily of cash and cash equivalents, accounts receivable, accounts payable and debt instruments.  The carrying amounts of cash and cash equivalents, accounts receivable and accounts payable are representative of their fair values due to their short maturities.  The carrying amounts of our revolving credit facility approximates fair value because the underlying instrument includes provisions that adjust our interest rates based on current market rates.  The fair values of our other long-term liabilities are not materially different from their carrying values.
On June 2, 2016, we issued warrants to lessors to purchase 370,000 common units representing limited partnership interests in the partnership for concessions on various long-term leases. These warrants may be exercised at any time and from time to time during next five years, at an exercise price per common unit equal to $4.77. These fair value of these warrants was calculated at $2.45 per unit based on a Black Scholes valuation model, utilizing Level 2 inputs based on the hierarchy established in ASC 820, Fair Value Measurement.
On August 8, 2016, we, as part of the private placement described above, also issued a warrant to the Purchaserpurchaser to purchase approximately 890,000 common units at an exercise price of $10.82 per common unit. This Warrantwarrant shall be exercisable for a period of six years from the closing date and include customary provisions and protections, including anti-dilution protections. The fair value of this warrant at issuance date was calculated at $5.56 per unit based on a Black Scholes valuation model, utilizing Level 2 inputs based on the hierarchy established in ASC 820, Fair Value Measurement. This liability is  marked to market each quarter with fair value gains and losses recognized immediately in earnings and included in Other income (expense) on our Consolidated Statements of Operations. The warrant liability was $4.7$2.1 million and $7.0$2.8 million at June 30, 2017March 31, 2018, and December 31, 2016, respectively, and we2017, respectively. We recorded a a non-cash mark-to-market gain of $3.0 million and $2.3$0.7 million during the three and six months ended June 30, 2017, respectively.March 31, 2018, and a loss of $0.7 million during the three months ended March 31, 2017.
Retirement Plan 
We sponsor a 401(k) plan for substantially all employees that provides for us to match 100% of participant contributions up to 5% of the participant’s pay.  Additionally, we can make discretionary contributions as deemed appropriate by management. 
As of May 1, 2017, we reestablished the employer 401(k) contributions, which was previously suspended on July 1, 2016. Employer contributions to these plans for continuing operations totaled $105,045$297,000 and $177,000$0 for the sixthree months ended June 30,March 31, 2018, and 2017, and 2016, respectively. Employer contributions for discontinued operations was $118,000 for the six months ended June 30, 2016.
Seasonality 
Winter weather affects the months during which we can wash and wet-process sand in Wisconsin.  Seasonality is not a significant factor in determining our ability to supply sand to our customers because we accumulate a stockpile of wet sand feedstock during non-winter months.  During the winter, we process the stockpiled sand to meet customer requirements.  However, we sell sand for use in oil and natural gas production basins where severe weather conditions may curtail drilling activities.  This is particularly true in drilling areas located in the northern U.S. and western Canada.  If severe winter weather precludes drilling activities, our

frac sand sales volume may be adversely affected.  Generally, severe weather episodes affect production in the first quarter with effects possibly continuing into the second quarter. 
Concentration of Credit Risk 
We provide credit, in the normal course of business, to customers located throughout the United States and Canada.  We encounter a certain amount of credit risk as a result of a concentration of receivables among a few significant customers. We perform ongoing credit evaluations of our customers and generally do not require collateral.  The trade receivables (as a percentage of total trade receivables) as of June 30, 2017March 31, 2018, and December 31, 20162017, from such significant customers are set forth below:
June 30, 2017 December 31, 2016 March 31, 2018 December 31, 2017 
Customer A16% 16% 25% 17% 
Customer B14% 22% 19% 20% 
Customer C14% *
 *
 13% 
Customer D12% 13% 
An asterisk indicates trade receivables are less than ten percent.

Significant customers
The table shows the %percent of revenue of our significant customers for our continuing operations represented for the sixthree months ended June 30, 2017March 31, 2018, and 2016.2017.
June 30, 2017 June 30, 2016 March 31, 2018 March 31, 2017 
Customer A28% 17% 
Customer B26% 35% 12% *
 
Customer D16% *
 10% 32% 
Customer E*
 16% 
An asterisk indicates revenue is less than ten percent.
Geographical Data 
Although we own no long-term assets outside the United States, our Sand businesswe began selling productsand in Canada during 2013.  We recognized $7.8$11.8 million and $8.0$5.4 million of revenues in Canada for the sixthree months ended June 30,March 31, 2018, and 2017, and 2016, respectively.  All other sales have occurred in the United States.
Recent Issued Accounting PronouncementsPronouncement 
In May 2014, August 2015 and May 2016, the FASB issued ASU 2014-09, Revenue from Contracts with Customers, ASU 2015-14, Revenue from Contracts with Customers, Deferral of the Effective Date, and ASU 2016-12, Revenue from Contracts with Customers, Narrow-Scope Improvements and Practical Expedients, respectively, as a new Topic, Accounting Standards Codification Topic 606.  The new revenue recognition standard provides a five-step analysis of transactions to determine when and how revenue is recognized. The core principle is that a company should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. It also requires entities to disclose both quantitative and qualitative information that enable financial statements users to understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. This guidance is effective for annual periods beginning after December 15, 2017 with early adoption permitted on January 1, 2017 and shall be applied retrospectively to each period presented or as a cumulative-effect adjustment as of the date of adoption. We have certain contractual arrangements that include "take-or-pay" provisions. The fixed fees to which we have an unconditional right under these contracts could be subject to certain recognition changes and additional disclosure under ASU 2014-09. As we are in the process of evaluating the impact of the standard, we have not yet quantified the impact of adoption or determined the method of adoption. During 2017, we will perform the remainder of our implementation process, which will include quantification of impact, selection of adoption method and development of policies. We will adopt this guidance in the first quarter of 2018.

In February 2016, the FASB issued ASU 2016-02, Leases. This ASU requires lessees to recognize lease assets and lease liabilities generated by contracts longer than a year on their balance sheet.sheets. The ASU also requires companies to disclose in the footnotes to their financial statements information about the amount, timing, and uncertainty for the payments they make for the lease agreements. ASU 2016-02 is effective for public companies for annual periods and interim periods within those annual periods beginning after December 31, 2018. Early adoption is permitted for all entities. We currently have significant long-term operating leases for rail cars and transload facilities. Pursuant to the adoption, we will record substantial liabilities and corresponding assets for these leases. We have engaged an independent consultant to assist us in our assessment of our lease contracts. While we are not yet in a position to assess the full impact of the application of this ASU, we expect that the impact of recording the lease liabilities and the corresponding additional assets will have a significant impact on our financial position and results of operations and related disclosures in the notes to our consolidated financial statements.
In January 2017, the FASB issued ASU 2017-01, Business Combinations.  This ASU provides guidance We plan to entities to assist with evaluating when a set of transferred assets and activities (collectively, the "set") is a business and provides a screen to determine when a set is not a business. Under this ASU, when substantially all of the fair value of gross assets acquired (or disposed of) is concentrated in a single identifiable asset, or group of similar assets, the assets acquired would not represent a business. Also, to be considered a business, an acquisition would have to include an input and a substantive process that together significantly contribute to the ability to produce outputs. ASU 2017-01 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2017, and should be applied on a prospective basis to any transactions occurring within the period of adoption. Early adoption is permitted for interim or annual periods in which the financial statements have not been issued. We adoptedadopt this guidance in the second quarter of 2017 and applied it to our asset acquisition described in Note 2 - Asset Acquisition.on January 1, 2019.
5.4.             LONG-TERM DEBT 
Following is a summary of our long-term debt: 
 June 30, 2017 December 31, 2016 
     
 ($ in thousands) 
Revolving credit facility$136,928
 $140,701
 
Second lien term loan40,000
 
 
Less: Deferred financing costs, net(8,238) (6,689) 
Total long-term debt$168,690
 $134,012
 
 March 31, 2018 December 31, 2017 
     
 ($ in thousands) 
Second lien term loan - principal$215,000
 $40,000
 
Revolving credit facility - principal9,510
 143,700
 
Less: Deferred financing costs, net(20,757) (7,349) 
Total debt203,753
 176,351
 
Less current portion (8,063) 
 
Long-term debt$195,690
 $176,351
 
Revolving Credit Facility  
On June 27, 2014,January 5, 2018, we entered into an amendeda $75.0 million Second Amended and restated revolving creditRestated Revolving Credit and security agreement (as amended, theSecurity Agreement (the “Credit Agreement”), among Emerge Energy Services LP,the Partnership, as parent guarantor, each of its subsidiaries, as borrowers, (the “Borrowers”), and PNC Bank, National Association (“PNC Bank”), as administrative agent and collateral agent, (the “agent”), and the other lenders party thereto. The Credit Agreement replaced the Prior Credit Agreement. The Credit Agreement provides for a $75.0 million asset-based revolving credit facility, and a $20.0 million sublimit for the issuance of letters of credit. The Credit Agreement matures on June 27, 2019 and, after giving effect to the amendments described below, consists of a $190 million revolving credit facility, which included a sub-limit of up to $20 million for letters of credit, and incurs interest at a rate equal to either, at our option, LIBOR plus 5.00% or the base rate plus 4.00%. We also incur a commitment fee of 0.375% on committed amounts that are neither used for borrowings nor under letters of credit.January 5, 2022. Substantially all of theour assets of the Borrowers are pledged as collateral under the Credit Agreement.
On August 31, 2016, we closed the sale of the Fuel business, used the net proceeds therefrom to repay outstanding borrowings under the Credit Agreement and entered into Amendment No. 11 to the Credit Agreement with the Borrowers, the lenders and the agent. Amendment No. 11, among other things, restated the Credit Agreement and provided a full waiver for all defaults or events of default arising out of our failure to comply with the financial covenant to generate minimum amounts of adjusted EBITDA during the quarters ended March 31, 2016, June 30, 2016 and September 30, 2016 and the covenant to maintain the minimum amount of excess availability for any date prior to September 1, 2016.
Pursuant to Amendment No. 11, the Credit Agreement now requires the Partnership to maintain the following financial covenants:
a covenant to maintain $15 million of excess availability (as defined in the Credit Agreement);
a covenant to limit capital expenditures (as defined in the Credit Agreement) to certain maximum amounts for each quarter through March 31, 2019;
beginning with the quarter ending June 30, 2017, a covenant to generate consolidated EBITDA (as defined in the Credit Agreement) in certain minimum amounts;

beginning with the quarter ending March 31, 2018, a covenant to maintain an interest coverage ratio (as defined in the Credit Agreement) of not less than 2.00 to 1.00, which is scheduled to increase to 3.00 to 1.00 for the fiscal quarter ending March 31, 2019; and
a covenant to raise at least $31.2 million of net proceeds from the issuance and sale of common equity by November 30, 2016, which was satisfied by our underwritten sale of common units which closed on November 23, 2016.
In addition, the Credit Agreement also prohibits us from making cash distributions to our unitholders and requires all cash receipts by us and our subsidiaries to be swept on a daily basis and used to reduce outstanding borrowings under the Credit Agreement.
On April 12, 2017, the Partnership entered into Amendment No. 12 to the Credit Agreement. The Amendment amended the Revolving Credit Agreement to permit the Partnership and the Borrowers to enter into the Second Lien Term Loan Agreement and to reduce commitments under thefirst lien basis. This revolving credit facility to $190 million, and further reducing on a quarterly basis to $125 million for the quarter beginning January 1, 2019.
Second Lien Term Loan Agreement
On April 12, 2017, we entered into a new $40 million second lien senior secured term loan facility with our wholly-owned subsidiaries Emerge Energy Services Operating LLC and Superior Silica Sands LLC, as borrowers (the “Borrowers”) and U.S. Bank National Association as disbursing agent and collateral agent (the “Second Lien Term Loan Agreement”). The Second Lien Term Loan Agreement matures on April 12, 2022. Proceeds of the new term credit facility were usedis available to (i) pay down a portion of the ourrefinance existing revolving credit facility,indebtedness, (ii) fund the asset acquisition described in Note 2 (iii) pay fees and expenses incurred in connection with the new term credit facility and (iv)(iii) for general business purposes. Substantially all of our assets are pledged as collateral on a second lien basis under the Second Lien Term Loan Agreement.purposes, including working capital requirements, capital expenditures, permitted acquisitions, making debt payments when due, and making distributions and dividends.

The Second Lien Term LoanCredit Agreement contains various covenants and restrictive provisions and also requires the maintenance of certain financial covenants as follows:
a minimum liquidity requirement of $20.0 million at all times;
beginning with the fiscal quarter ending March 31, 2018, an interesta total leverage ratio of a maximum of 5.50:1.00 decreasing quarterly thereafter to 3.00:1.00 for the fiscal quarter ending December 31, 2018, and thereafter;
beginning with the fiscal quarter ending March 31, 2018, a minimum fixed charge coverage ratio of not less than 1.70:1.10:1.00; and
a limit on capital expenditures, subject to certain availability thresholds.
Loans under the Credit Agreement bear interest at our option at either (i) a base rate, which will be the base commercial lending rate of PNC Bank, as publicly announced to be in effect from time to time, plus an applicable margin ranging from 0.75% to 1.25% based on total leverage ratio; or (ii) LIBOR plus an applicable margin ranging from 1.75% to 2.25% based on the Partnership’s total leverage ratio.
During the three months ended March 31, 2018, we wrote off $3.9 million of deferred financing costs relating to the reduction of our revolving credit facility.
As of March 31, 2018, our outstanding borrowings under the Credit Agreement bore interest at a rate of 7.8%.
Second Lien Note Purchase Agreement
On January 5, 2018, the Partnership as guarantor, and the Partnership’s wholly owned subsidiaries Emerge Energy Services Operating LLC and Superior Silica Sands LLC, as issuers, entered into a $215 million second lien note purchase agreement with the purchasers thereunder (the “Second Lien Note Purchase Agreement”). The notes issued under the Second Lien Note Purchase Agreement will mature on January 5, 2023. Proceeds of the sale of the notes under the Second Lien Note Purchase Agreement will be used (i) to fully pay off the Partnership’s existing second lien term credit facility, (ii) to fully pay off the obligations under the Partnership’s Prior Credit Agreement, (iii) to finance capital expenditures, (iv) to pay fees and expenses incurred in connection with the new second lien facility and (v) for general business purposes. Substantially all of the Partnership’s assets are pledged as collateral on a second lien basis. 
The Second Lien Note Purchase Agreement contains various covenants and restrictive provisions and also requires the maintenance of certain financial covenants as follows: 
a minimum liquidity requirement of $20.0 million at all times;
beginning with the fiscal quarter ending March 31, 2018, a total leverage ratio of a maximum of 6.00:1.00 increasingdecreasing quarterly thereafter to 2.55:3.00:1.00 for the fiscal quarter ending March 31, 2019, and thereafter;
beginning with the fiscal quarter ending June 30, 2017,March 31, 2018, a minimum EBITDAfixed charge coverage ratio of not less than $637,500 for such fiscal quarter,1.10:1.00, increasing quarterly to $50 million2.00:1.00 for the four fiscal quarter period ending June 30,March 31, 2019, and thereafter; and
minimum excessa limit on capital expenditures, subject to certain availability thresholds. 
Commencing on September 30, 2018, we are required to make quarterly principal payments (without premium or penalty) equal to (i) for each fiscal quarter ending on or prior to December 31, 2019, 1.25%, and (ii) for each fiscal quarter thereafter, 1.875%, of at least $12.75the original principal amount. Accordingly, on March 31, 2018, we have classified $8.1 million so longof principal as the Revolving Credit Agreement remains in effect.a current liability.
LoansThe notes under the Second Lien Term LoanNote Purchase Agreement will bear interest at 11.0% per annum until December 31, 2018, and ranging from 10.00% per annum to 12.00% per annum thereafter, depending on the Partnership’s optionour leverage ratio.
In lieu of paying cash for certain transaction costs, we also issued 814,295 common units representing limited partnership interests in the Partnership to the Second Lien Note holders in a private placement in January 2018. Proceeds from this issuance, net of expenses, was $6.0 million.
As of March 31, 2018, borrowings under the Second Lien Note Purchase Agreement bore interest at either the basea rate plus 9.00%, or LIBOR plus 10.00%of 11.0%.
Covenants Compliance
At June 30, 2017,March 31, 2018, we were in compliance with our loan covenants and had undrawn availability under the Credit Agreement totaling $43.6$53.5 million, well above the minimum availability required under our current covenants. Our outstanding borrowings under the Credit Agreement bore interest at a weighted-average rate of 6.51% and the borrowings under the Second Lien Term Loan Agreement bore interest at a weighted-average rate of 11.16%.

6.5.             RELATED PARTY TRANSACTIONS 
Related party transactions included in our Condensed Consolidated Balance Sheets and Condensed Consolidated Statements of Operations for continuing operations are summarized in the following table:
 Six Months Ended June 30, 
 2017 2016 
     
 ($ in thousands) 
Wages and employee-related costs (1) $8,263
 $5,114
 
Wages and employee-related costs for discontinued operations for June 30, 2016 was $4.0 million.

 Three Months Ended March 31, 
 2018 2017 
     
 ($ in thousands) 
Employee-related and other costs (1) $9,286
 $4,076
 
June 30, 2017 December 31, 2016 March 31, 2018 December 31, 2017 
        
($ in thousands) ($ in thousands) 
Accounts receivable$
 $371
 
Accounts receivable, net$2
 $962
 
Accounts payable and accrued liabilities$574
 $436
 $351
 $800
 
(1)We do not have any employees.  Our general partner manages our human resource assets, including fringe benefits and other employee-related charges.  We routinely and regularly reimburse our general partner for any employee-related costs paid on our behalf, and report such costs as operating expenses.
7.6.             EQUITY-BASED COMPENSATION 
Effective May 14, 2013, we adopted our 2013 Long-Term Incentive Plan (the “LTIP”) for providing long-term incentives for employees, directors, and consultants who provide services to us, andus. The LTIP provides for the issuance of an aggregate of up to 2,321,968 common units to be granted either as options, restricted units, phantom units, distribution equivalent rights, unit appreciation rights, unit award, profits interest units, or other unit-based award granted under the plan.  All of our outstanding grants will be settled through issuance of limited partner common units.
For remaining phantom units granted to employees in 2013, we currently assume a 55-month67-month vesting period, which represents management’s estimate of the amount of time until all vesting conditions have been met. Concurrent with the closing of a secondary offering in June 2014 and the exercise of the underwriters’ over-allotment in July 2014, 90,686 of these phantom units vested and common units were issued. For other phantom units granted to employees, we assumehave a 24 to 36-month vesting period. Restricted units are awarded to our independent directors on each anniversary of our IPO, each with a vesting period of one year.  Regarding distributions for independent directors and other employees, distributions are credited to a distribution equivalent rights account for the benefit of each participant and become payable generally within 45 days following the date of vesting.  As of June 30, 2017,March 31, 2018, the unpaid liability for distribution equivalent rights totaled $0.8 million. 
In 2017,the first quarter of 2018, we granted 31,75024,800 time-based phantom units to certain officers and employees to vest in equal installments on each anniversary date of the grant over a period of two to three years.
The following table summarizes awards granted during the sixthree months ended June 30, 2017.March 31, 2018. 
Total
Units
 Phantom
Units
 Restricted
Units
 Fair Value per Unit
at Award Date
 Total
Units
 Phantom
Units
 Restricted
Units
 Fair Value per Unit
at Award Date
 
Outstanding at December 31, 2016289,607
 213,851
 75,756
 $13.09
 
Outstanding at December 31, 2017333,821
 310,780
 23,041
 $13.10
 
Granted54,791
 31,750
 23,041
 $12.76
 24,800
 24,800
 
 $6.98
 
Vested(91,156) (15,400) (75,756) $11.75
 (25,275) (25,275) 
 $9.72
 
Forfeitures(12,000) (12,000) 
 $
 
 
 
 $
 
Outstanding at June 30, 2017241,242
 218,201
 23,041
 $13.30
 
Outstanding at March 31, 2018333,346
 310,305
 23,041
 $12.90
 
 
For the sixthree months ended June 30,March 31, 2018, and 2017, and 2016, we recorded non-cash equity-based compensation expense of $0.7$0.4 million and $0.1$0.3 million, respectively, in selling, general and administrative expenses. Non-cash equity-based compensation expense for continuing operations was $(0.1) million for the six months ended June 30, 2016.
As of June 30, 2017,March 31, 2018, the unrecognized compensation expense related to the grants discussed above amounted to $1.6$1.5 million to be recognized over a weighted average of 0.901.09 years.

8.7.             INCOME TAXES 
Continuing operations
Our provision for income taxes for continuing operations relates to: (i) Texas margin taxes for the Partnership, and (ii) an insignificant amount ofa Canadian income taxes on SSS earnings in Canada (most of our earnings are exempted under a U.S/Canada tax treaty).  For federal income tax purposes, we report our income, expenses, gains, and losses as a partnership not subject to income taxes.  As such, each partner is responsible for his or her share of federal and state income tax.  Net earnings for financial statement purposes may differ significantly from taxable income reportable to each partner because of differences between the tax basis and financial reporting basis of assets and liabilities.

The composition of our provision for income taxes for continuing operations is as follows:
Six Months Ended June 30, Three Months Ended March 31, 
2017 2016 2018 2017 
        
($ in thousands) ($ in thousands) 
Texas margin tax$
 $20
 $42
 $
 
Canadian income tax
 1
 55
 
 
Total provision for income taxes$
 $21
 $97
 $
 
 
We are responsible for our portion of the Texas margin tax that is included in our subsidiaries’ consolidated Texas franchise tax returns.  For our operations in Texas, the effective margin tax rate is approximately 0.75%0.375% as defined by applicable state law.  The margin tax qualifies as an income tax under Generally Accepted Accounting Principles (GAAP),GAAP, which requires us to recognize the impact of this tax on the temporary differences between the financial statement assets and liabilities and their tax basis attributable to such tax.
9.8.             EARNINGS PER COMMON UNIT  
We compute basic earnings (loss) per unit by dividing net income (loss) by the weighted-average number of common units outstanding including certain participating securities.  Participating securities include unvested equity-based payment awards that contain rights to distributions, as well as convertible preferred units and warrants that contain contractual rights to participate in any distributions that are declared.  It is our policy to exclude participating securities, convertible preferred units and warrants from the calculation of basic earnings (loss) per unit in periods of net losses from continuing operations since these securities are not contractually obligated to share in losses.
Diluted earnings per unit is computed by dividing net income by the weighted-average number of common units outstanding, including participating securities, and increased further to include the number of common units that would have been outstanding had potential dilutive units been exercised.  The dilutive effect of restricted units is reflected in diluted net income per unit by applying the treasury stock method.  For periods in which warrants are dilutive, we reverse the income effects of the warrants and include incremental units in our computation of diluted earnings per unit. Under FASB ASC 260-10-45, Contingently Issuable Shares, 93,806 of our outstanding phantom units are not included in basic or diluted earnings per common unit calculations as of June 30, 2017March 31, 2018, and 2016.  We exclude all potentially dilutive units from the2017. 
Basic and diluted earnings per unit calculation for any periods of net loss from continuing operationsthe three months ended March 31, 2018, is calculated as their effect would be anti-dilutive.follows:
 Three Months Ended June 30, Six Months Ended June 30, 
 2017 2016 2017 2016 
 ($ in thousands, except unit and per unit data)
Net income (loss) from continuing operations$(3,425) $(28,150) $(14,815) $(62,591) 
Net income (loss) from discontinued operations(2,657) 5,253
 (2,657) 5,479
 
Net Income (loss)$(6,082) $(22,897) $(17,472) $(57,112) 
         
Weighted average number of common units outstanding - basic and diluted30,147,725
 24,129,418
 30,104,613
 24,125,320
 
         
Basic and diluted earnings (loss) per unit:        
Earnings (loss) per common unit from continuing operations$(0.11) $(1.17) $(0.49) $(2.59) 
Earnings (loss) per common unit from discontinued operations(0.09) 0.22
 (0.09) 0.23
 
Basic and diluted earnings (loss) per common unit$(0.20) $(0.95) $(0.58) $(2.36) 
 Three Months Ended March 31, 
 2018 2017 
     
 ($ in thousands, except per unit data) 
Net Income (loss)$1,486
 $(11,390) 
     
Weighted average common units outstanding30,997,125
 30,061,022
 
Weighted average units deemed participating securities215,843
 
 
Weighted average number of common units outstanding - basic31,212,968
 30,061,022
 
Weighted average potentially dilutive units outstanding15,122
 
 
Add incremental units from assumed exercise of warrants143,292
 
 
Weighted average number of common units outstanding - diluted31,371,382
 30,061,022
 
     
Basic earnings (loss) per common unit$0.05
 $(0.38) 
     
Diluted earnings (loss) per common unit$0.05
 $(0.38) 

10.9.      RECURRING FAIR VALUE MEASUREMENTS
We follow FASB ASC 820, Fair Value Measurement, which defines fair value, establishes a framework for measuring fair value, and specifies disclosures about fair value measurements.  This guidance establishes a hierarchy for disclosure of the inputs to valuations used to measure fair value.  The hierarchy prioritizes the inputs into three broad levels as follows. 

Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities.
Level 2 inputs are quoted prices for similar assets and liabilities in active markets or inputs that are observable for the asset or liability, either directly or indirectly through market corroboration, for substantially the full term of the financial instrument.
Level 3 inputs are measured based on prices or valuation models that require inputs that are both significant to the fair value measurement and less observable from objective sources.
Our valuation models consider various inputs including (a) mark to market valuations, (b) time value and, (c) credit worthiness of valuation of the underlying measurement.
A financial asset or liability’s classification within the hierarchy is determined based on the lowest level of input that is significant to the fair value measurement. 
The following table shows the three interest rate swap agreements we entered into during 2013 to manage interest rate risk associated with our variable rate borrowings.
Agreement Date Effective Date Maturity Date Notional Amount Fixed Rate Variable Rate 
Nov. 1, 2013 Oct. 14, 2014 Oct. 16, 2017 $25,000,000 1.33200% 1 Month LIBOR 
Nov. 7, 2013 Oct. 14, 2014 Oct. 16, 2017 $25,000,000 1.25500% 1 Month LIBOR 
Nov. 21, 2013 Oct. 14, 2014 Oct. 16, 2017 $20,000,000 1.21875% 1 Month LIBOR 
The Fuel business utilized financial hedging arrangements whereby we hedged a portion of our gasoline and diesel inventory, which reduced our commodity price exposure on some of our activities.  The derivative commodity instruments we utilized consisted mainly of futures traded on the New York Mercantile Exchange.  Following the sale of the Fuel business, we have no open commodity derivative contracts.
We do not designate our derivative instruments as hedges under GAAP.  As a result, we recognize derivatives at fair value on the consolidated balance sheet with resulting gains and losses reflected in interest expense (for interest rate swap agreements). The resulting gains and losses for the Fuel business were recorded to cost of goods sold for discontinued operations (for derivative commodity instruments), as reported in the condensed consolidated statements of operations.  Our derivative instruments serve the same risk management purpose whether designated as a hedge or not. We derive fair values principally from published market interest rates and fuel price quotes (Level 2 inputs).  The precise level of open position commodity derivatives is dependent on inventory levels, expected inventory purchase patterns, and market price trends. We do not use derivative financial instruments for trading or speculative purposes. 
On August 8, 2016, we, as part of the private placement described above, also issued a warrant to the Purchaserpurchaser to purchase approximately 890,000 common units at an exercise price of $10.82 per common unit. The Warrantwarrant shall be exercisable for a period of six years from the closing date and include customary provisions and protections, including anti-dilution protections. The fair value of this warrant at issuance date was calculated at $5.56 per unit based on a Black Scholes valuation model, utilizing Level 2 inputs based on the hierarchy established in ASC 820, Fair Value Measurement.  This liability is  marked to market each quarter with fair value gains and losses recognized immediately in earnings and included in Other expense (income) on our Condensed Consolidated Statements of Operations. We recorded a non-cash mark-to-market gain of $3.0$0.7 million and $2.3a loss of $0.7 million during the three and six months ended June 30, 2017.March 31, 2018, and 2017, respectively.
The fair values of outstanding derivative instruments and warrant and their classifications within our Condensed Consolidated Balance Sheets are summarized as follows:
 June 30, 2017 December 31, 2016 Classification 
       
 ($ in thousands)   
Interest rate swaps$13
 $227
 Accrued liabilities 
Warrant liability$4,707
 $7,019
 Other long-term liabilities 
 March 31, 2018 December 31, 2017 Classification
      
 ($ in thousands)  
Warrant liability$2,134
 $2,811
 Other long-term liabilities
The effect of derivative instruments, none of which has been designated for hedge accounting, on our Condensed Consolidated Statements of Operations was as follows: 

Three Months Ended June 30, Six Months Ended June 30, Three Months Ended March 31,  
2017 2016 2017 2016Classification2018 2017 Classification
            
((income) expense $ in thousands) ((income) expense $ in thousands) 
Interest rate swaps$(8) $152
 $(64) 563
Interest expense, net$
 $(56) Interest expense, net
Commodity derivative contracts
 682
 
 701
Income from discontinued operations
Warrant(3,008) 
 (2,312) 
Other expense (income)(677) 696
 Other expense (income)
$(3,016) $834
 $(2,376) $1,264
 $(677) $640
 

11.10.      SUPPLEMENTAL CASH FLOW DISCLOSURES 
The following supplemental disclosures may assist in the understanding of our Condensed Consolidated Statements of Cash Flows: 
Six Months Ended June 30, Three Months Ended March 31, 
2017 2016 2018 2017 
        
($ in thousands) ($ in thousands) 
Cash paid for interest$6,934
 $11,438
 $3,359
 $2,921
 
Cash paid for income taxes, net of refunds$15
 $(67) $
 $15
 
Issuance of equity$5,974
 $
 
Purchases of PP&E accrued but not paid at period-end$1,115
 $180
 $3,210
 $1,561
 
Purchases of PP&E accrued in a prior period and paid in the current period$170
 $3,364
 $11,372
 $170
 
ITEM 2.                                               MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS 
Emerge Energy Services LP (“Emerge”) is a Delaware limited partnership that completed its initial public offering (“IPO”) on May 14, 2013 to become a publicly traded partnership.  The combined entities of Superior Silica Sands LLC (“SSS”), a Texas limited liability company and Emerge Energy Services Operating LLC (“Emerge Operating”), a Delaware limited liability company, currently represent Emerge. 
References to the “Partnership,” “we,” “our” or “us” refer collectively to Emerge and all of its subsidiaries.

Overview 
We are a publicly-traded limited partnership formed in 2012 by management and affiliates of Insight Equity Management Company LLC and its affiliates (collectively “Insight Equity”) to own, operate, acquire and develop a diversified portfolio of energy service assets. 
On August 31, 2016, we completed the sale of our Fuel business pursuant to an Amended and Restated Purchase and Sale Agreement, dated August 31, 2016 (the “Restated Purchase Agreement”), with Susser Petroleum Operating Company LLC and Sunoco LP (together, “Sunoco”). Sunoco paid Emerge a purchase price of $167.7 million in cash (subject to certain working capital and other adjustments in accordance with the terms of the Restated Purchase Agreement), of which $14.25 million was placed into several escrow accounts to satisfy potential claims from Sunoco for indemnification under the Restated Purchase Agreement. During the second quarter of 2017, we received the entire $2.25 million of the Renewable Fuel Standard escrow. Additionally, we wrote off $2.7 million of the hydrotreator and pipeline escrow receivables relating to completion delays and cost overruns. Any escrowed funds remaining after certain periods of time set forth in the Restated Purchase Agreement will be released to Emerge, provided that no unsatisfied indemnity claims exist at such time.
The results of operations of the Fuel business have been classified as discontinued operations for all periods presented and we now operate our continuing business in a single Sand business. Through our Sand business, we are engaged in the businesses of mining, processing, and distributing silica sand, a key input for the hydraulic fracturing of oil and gas wells. We conduct our Sand operations through our subsidiary SSS, and we believe our SSS brand has name recognition and enjoys a positive reputation with our customers.
On April 12, 2017, we closed the transaction to acquire substantially all of the assets of Osburn Materials for $20 million. The transaction was funded with a new $40 million term loan, and the remaining proceeds (after transaction fees and expenses) were used to reduce outstanding borrowings under the revolving credit facility. Osburn Materials is located approximately 25 miles south of San Antonio, Texas and produces and sells sand and construction materials but did not serve the energy markets. We

upgraded the existing operations for conversion into frac sand sales and commenced frac sand production in July 2017. Osburn Materials’ current sand reserves, which consists mostly of 40/70 and 100 mesh fine mesh, meets API specifications for all grades.
The following discussion analyzes our financial condition and results of operations and should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2016,2017, as well as historical condensed consolidated financial statements and notes included elsewhere in this Quarterly Report. 

Results of Operations 
The following table summarizes our consolidated operating results.results:
Three Months Ended June 30, Six Months Ended June 30, Three Months Ended March 31, 
2017 2016 2017 2016 2018 2017 
            
($ in thousands) ($ in thousands)
Revenues$82,602
 $24,825
 $157,946
 $54,495
 $106,750
 $75,344
 
     
       
Operating expenses: 
  
      
  
 
Cost of goods sold (excluding depreciation, depletion and amortization)71,428
 38,354
 143,739
 82,144
 80,242
 72,311
 
Depreciation, depletion and amortization5,675
 4,870
 10,331
 9,777
 4,861
 4,656
 
Selling, general and administrative expenses6,850
 4,459
 12,728
 11,234
 8,571
 5,878
 
Contract and project terminations
 10
 
 4,036
 1,689
 
 
Total operating expenses83,953
 47,693
 166,798
 107,191
 95,363
 82,845
 
Operating income (loss)(1,351) (22,868) (8,852) (52,696) 11,387
 (7,501) 
Other expense (income): 
  
      
  
 
Interest expense5,082
 5,283
 8,280
 9,877
 10,492
 3,198
 
Other(3,008) (2) (2,317) (3) (688) 691
 
Total other expense2,074
 5,281
 5,963
 9,874
 9,804
 3,889
 
Income (loss) before provision for income taxes(3,425) (28,149) (14,815) (62,570) 1,583
 (11,390) 
Provision (benefit) for income taxes
 1
 
 21
 97
 
 
Net income (loss) from continuing operations(3,425) (28,150) (14,815) (62,591) 
Income (loss) from discontinued operations, net of taxes(2,657) 5,253
 (2,657) 5,479
 
Net income (loss)$(6,082) $(22,897) $(17,472) $(57,112) $1,486
 $(11,390) 
            
Adjusted EBITDA (a) $7,534
 $(9,080) $7,602
 $(18,593) $17,386
 $68
 
(a)        See “Adjusted EBITDA” below for a discussion of Adjusted EBITDA and a reconciliation to net income (loss) and cash flows from operations. 
Major Factors Impacting Comparability Between Prior and Future Periods
Market Trends
Beginning in late 2014, the market prices for crude oil and refined products began a steep and protracted decline which continued into 2016. This greatly impacted the demand for frac sand as drilling and completion of new oil and natural gas wells was significantly curtailed in North America. As a result, we experienced significant downward pressure on sand volume and pricing. However, commodity prices stabilized in the middle of 2016, leading to an improvement in drilling activity during the third quarter of 2016 and into 2017. Market conditions have improved significantlycontinued to improve in the first half of 2017,current environment, and based on industry outlooks from third partythird-party research firms and customers, we expect conditions to continue to improveremain strong for the rest of the year and into 2018.
The increase in demand for frac sand has significantly tightened the availability of supply, and as a result, customers are seeking surety of supply through contractual commitments. We are now selectively agreeing toand entering into multi-year contracts with some of our key accounts. For example, we recently entered into a three year,We are also executing take-or-pay sand supply agreement withagreements for our San Antonio operation and have received a customer whereby we are compensated at a fixed price per ton if less thannumber of non-binding indications of interest for the minimum volume of sand committed for sale under the agreement is ultimately purchased by the customer.product. We believe this ensuresthat sand supply agreements ensure the customers a steady supply of product in exchange for covering the infrastructure-related fixed costs plus needed margins associated with operating our business.

Although the near-term supply is closely aligned to current demand, our competitors have begun building in-basin frac sand operations targeting the Permian Basin in West Texas Permian Basin.  Our Osburn Materials transaction positions us to target other under-served Texas in-basin markets with comparatively less start-up costs (e.g., permitting, construction, infrastructure, and environmental analyses).the Eagle Ford basin in South Texas.  There can be no assurances that all of the announced projects will be completed given permitting, construction, infrastructure, and environmental constraints.
Sale of Fuel Business
In order Our San Antonio operation positions us to improve our competitive positioningtarget the second most active Texas in-basin market with comparatively less start-up costs (e.g., permitting, construction, infrastructure, and retain upside for the eventual recovery in the oil and gas cycle, we divested our Fuel business to reduce our debt burden. We recorded a gain of $31.7 million on the sale of the Fuel business during the third quarter of 2016. Please see Note 3 to our financial statements for a detailed discussion of the sale of the Fuel business.environmental analysis).
Expansion of Sand Resources
On April 12, 2017, we closed the transaction to acquire substantially all of the assets of Osburn Materialsour San Antonio operations for approximately $20 million. Osburn MaterialsThe San Antonio site is located approximately 25 miles south of San Antonio, Texas and producespreviously produced and sellssold construction, foundry and sports sands, and building products, but did not serve the energy markets. We upgraded the existing operations for conversion into frac sand salesproduction and commenced frac sand production in July 2017. Osburn Materials hasAs part of our expansion strategy in San Antonio, we began construction of a new wet and dry

plant on the site in October 2017. The new dry plant commenced operations in late April 2018, and the wet plant is targeted to be operational in July 2018.  Our San Antonio reserves contain API-specification, strategic reserves (40/70 and100 mesh sands) that will bolster our presence with in-basin local sands and balance our portfolio of northern white to local sands. With the close proximity of the plant to the Eagle Ford basin, we expect to sell the majority of the sand produced at the plant into this shale play, which is currently the second most active in the United States.
Fluctuating Fixed Costs for Sand
During 2014, our rapidly expanding frac sand business required us to contract for numerous railcars to be delivered and leased in the future as well as contracting for new transload facilities discussed above.facilities.  The industry downturn from 2015 through 2016 and the corresponding decline in volumes shipped created an excess number of railcars in our fleet, increasing our fixed costs per ton.per-ton. However, we successfully negotiated concessions with several of our vendors, in 2016, and the recentsignificant upturn in frac sand demand has required us to place most of our idled railcars back into service, thereby reducing our fixed cost per ton.
Changing Preferences of Customer Demand
For several years leading up to 2015, most oil and gas producers preferred the highest quality, coarsest grades of frac sand (20/40 and 30/50) to complete shale wells around North America. The drop in oil and gas prices during 2015 and 2016 forced many oil and gas producers to consider alternatives for lowering the cost to complete a new well. Lower quality proppants compared to northern white sands are often located closer to the shale basins than northern white sands, so some operators have elected to use these proppants and save on transportation costs. Finer mesh sands (40/70 and 100 mesh) have also been used more regularly as oil and gas well completion designs have evolved. As a leading provider of frac sand, we are able to meet the changing needs of our customers and the market. Our diversified set of capabilities enables us to produce both coarse and fine grades in large quantities. With our recent acquisition in San Antonio, we have two Texas operations that are well positioned geographically to meet the strong demand in the prolific Texas basins.
Cost Containment
To conserve liquidity and respond to the industry downturn, we became focused on prudently reducing costs while maintaining our ability to quickly respond to market demands. We have already implemented plans, but will continue to aggressively contain costs in the future. Such measures include:
We are minimizing the overall cost of sand sold by finding the lowest cost combinations of sand source, production location and transportation providers wherever possible.
We have negotiated, and continue to negotiate, price concessions and purchase commitment concessions from our major vendors, such as railcar lessors, rail transportation providers, mine operators, transload facilities operators, and professional services providers.
We have minimized our capital expenditures to include only those projects with the potential for rapid returns, and comply with our bank covenants that limit capital expenditures.
Sand Distribution System
We have developed our sand distribution system over several years through the addition of third-party transload facilities in the basins in which our customers operate. We are able to charge higher prices for these in-basinterminal sales than for FOB-plantFOB plant sales to provide this additional service and convenience to our customers and to cover related transportation and other services costs.

Currently, our northern white sand volumes are partially constrained by railroad congestion from thecertain class I carriers due to the high volume of shipments that have surpassed prior peak periods. We are working closely with our logistics partners to resolve the bottlenecks during this period of surging demand.demand, and we are increasing shipments on newly expanded rail outlets.
Technology Driven Proppant Products
In November 2015,early 2016, we acquired 11 patents and other intellectual property assets from AquaSmart Enterprises LLC for their Self-Suspending Sand technology. The productlaunched our self-suspending sand marketed under the brand is marketed as SandMaxX™. While subject to ongoing field testing that began in 2016 and data validation, thisThis new technology offers the potential to increase productivity and completion efficienciesproduction in oil and gas wells whilein addition to improving pump time and well site economics. At our Barron dry plant,reducing other upfront costs. Trial wells have proven that the technology is effective down-hole, but the customer adoption rate has been slower than initially anticipated. Under the contract, we had the option to continue ownership of this technology after the initial installment period (which expires on May 25, 2018) by payment of significant additional funds. Given the lack of market acceptance for SandMaxX™ proppant, even after considerable efforts to market the product, we have a pilot production circuitelected to produce in excess of 175,000 tons per year of SandMaxX™ product. This pilot production circuit uses proprietary and patented technology to coat all grades of standard frac sand. SandMaxX™ product was pumped downhole in multiple trial wells during 2016 and 2017, and while the early results appear favorable, we are working closely with our customers to confirm and document actual well performance data in addition to comparing the results against wells completed with regular sand. Our plans for constructing a commercial scale coating plant depend upon the successful completiondiscontinue ownership of the field trial testing and achieving market acceptanceintellectual property after the initial installment period. This will not have a material impact on our financial position or results of the product. We will continue to work toward transforming our Sand business from a commodity business to a more value-driven approach by developing capabilities and products that enable us to increase our presence in larger, more profitable markets.operations.
Continuing Operations
Operating results
Three Months Ended June 30, Six Months Ended June 30, Three Months Ended March 31, 
2017 2016 2017 2016 2018 2017 
            
($ in thousands) ($ in thousands)
Revenues$82,602
 $24,825
 $157,946
 $54,495
 
Revenues:    
Frac sand revenues$105,971
 $75,182
 
Non-frac sand revenues779
 162
 
Total revenues106,750
 75,344
 
Operating expenses: 
  
         
Cost of goods sold (excluding depreciation, depletion and amortization)71,428
 38,354
 143,739
 82,144
 80,242
 72,311
 
Depreciation, depletion and amortization5,675
 4,870
 10,331
 9,777
 4,861
 4,656
 
Selling, general and administrative expenses6,850
 4,459
 12,728
 11,234
 8,571
 5,878
 
Contract and project terminations
 10
 
 4,036
 1,689
 
 
Operating income (loss)$(1,351) $(22,868) $(8,852) $(52,696) $11,387
 $(7,501) 
Net income (loss) from continuing operations$(3,425) $(28,150) $(14,815) $(62,591) $1,486
 $(11,390) 
Adjusted EBITDA (a) $7,534
 $(16,028) $7,602
 $(29,010) $17,386
 $68
 
            
Volume of frac sand sold (tons in thousands)1,284
 392
 2,529
 815
 1,437
 1,245
 
Volume of non - frac sand sold (tons in thousands)108
 7
 114
 23
 
Volume of non-frac sand sold (tons in thousands)66
 6
 
Total volume of sand sold (tons in thousands)1,392
 399
 2,643
 838
 1,503
 1,251
 
            
Volume of frac sand produced by plant (tons in thousands) (b):        
Terminal sand sales (tons in thousands)655
 588
 
    
Volume of frac sand produced by plant (tons in thousands):    
Arland, Wisconsin facility508
 
 876
 
 407
 368
 
Barron, Wisconsin facility518
 391
 1,050
 711
 498
 532
 
New Auburn, Wisconsin facility302
 11
 619
 180
 345
 317
 
Kosse, Texas facility47
 26
 112
 43
 99
 65
 
San Antonio, Texas facility (b)59
 
 
Total volume of frac sand produced1,375
 428
 2,657
 934
 1,408
 1,282
 
(a)        See “Adjusted EBITDA” below for a discussion of Adjusted EBITDA and a reconciliation to net income (loss) and operating cash flows. 
(b) We commenced frac sand production inat the San Antonio facility in July 2017.

Three Months Ended June 30, 2017March 31, 2018 Compared to Three Months Ended June 30,March 31,  20162017
Revenues
Sand revenues increased by $57.8$31.4 million primarily due to a 249%20.1% increase in total volumes sold as a result of the increased market demand for frac sand, andas well as higher prices of frac sand in 20172018 compared to 2016.2017. FOB plant sales volumes increased 397%28% compared to a 139%an 11% increase for the higher-priced, in-basinterminal sand sales. In-basinTerminal sales as a percentage of total volumes sold decreased from 57%47% in the second quarter of 20162017 to 39%44% in the second quarter of 2017. The shift in the mix of FOB plant and in-basin volumes decreased the overall revenue2018. Revenue per ton even thoughincreased to $71.02 in 2018 compared to $60.23 per ton in 2017 due to significant price increases.
The major changes from 2017 to 2018 are as follows:
$16.9 million increase in sales of northern white sand (excluding estimated transportation markups), relating primarily to an 8% increase in volumes sold as well as increased pricing in light of market conditions for frac sand;
an estimated $8.2 million increase for significant increases in markups per ton sold through transload sites, along with increased volumes sold through these sites; and
$6.3 million increase in sales of native Texas sand (excluding estimated transportation markups), due to the addition of our San Antonio operation in July 2017, and increased volumes and sand prices increased in 2017.at our Kosse facility.

Cost of goods sold (excluding depreciation, depletion and amortization) 
Our cost of goods sold consists primarily of direct costs such as processing plant wages, royalties, mining, purchased sand, and transportation to the plant or to transload facilities, as well as indirect costs such as plant repairs and maintenance. Our direct costs of producing sand and our logistics costs for finished product increased with our increased sales. The most significant components of the $33.1$7.9 million increase from 2017 to 2018 are:
$16.37.5 million increase in the total cost to acquire and produce wet and dry sand due mainly to higher sales volumes;
$15.3 million20% increase in rail transportation-related expense, primarily due to:total volumes sold;
$16.3 million increased rail shipping costs due to increased volumes sold in-basin; offset by
$0.8 million decreased rail lease expense; and
$0.2 million decreased railcar storage costs;
$1.40.6 million increase in costs of transload facilities.facilities due to increased volumes; and
$0.2 million decrease in rail transportation-related expense resulting primarily from decreased railcar storage costs as we have placed previously stored cars back into service.
Selling, general and administrative expenses 
The $2.4$2.7 million increase in selling, general and administrative expenses is attributable primarily to:
$1.81.3 million increase in employee-related costs due to higher staffing and bonus accruals; and
$0.51.1 million expenses related to the long-term debt refinancing in January 2018.
Interest expense
Net interest expense increased $7.3 million primarily due to;
$5.7 million increase due to a $215 million addition of the notes issued under the Second Lien Note Purchase Agreement; and
$3.9 million write-off of deferred financing costs relating to the reduction of our revolving credit facility in equity-based compensation expense.January 2018; offset by
$2.1 million decreased interest expense due to the reduction of outstanding balances under the revolving credit facility.
Contract and project terminations
During the three months ended March 31, 2018, we recorded a non-cash charge against earnings of $1.7 million. This charge relates to the write-off of prepaid royalties. See Note 3 to our Condensed Consolidated Financial Statements for further discussion.
Other
Other expenses decreased $3.0$1.4 million due to a mark-to-market gain of $0.7 million recognized in the secondfirst quarter of 2018, compared to a loss of $0.7 million recognized in the first quarter of 2017, fordue to a change in the fair value of the warrant issued in August 2016.
Six Months Ended June 30, 2017 Compared to Six Months Ended June 30, 2016
Revenues
Sand revenues increased by $103.5 million, primarily due to a 215% increase in total volumes sold as a result of the increased market demand for frac sand and higher prices of frac sand in 2017 compared to 2016. FOB plant sales volumes increased 343% compared to a 128% increase for the higher-priced in-basin sand sales. In-basin sales as a percentage of total volumes sold decreased from 59% in the six months of 2016 to 43% in the six months of 2017. The shift in the mix of FOB plant and in-basin volumes decreased the overall revenue per ton, even though volumes and sand prices increased in 2017.
Cost of goods sold (excluding depreciation, depletion and amortization)
Our cost of goods sold consists primarily of direct costs such as processing plant wages, royalties, mining, purchased sand, and transportation to the plant or to transload facilities, as well as indirect costs such as plant repairs and maintenance. Our direct costs of producing sand and our logistics costs for finished product increased with our increased sales.  The most significant components of the $61.6 million increase are:
$21.5 million increase in the total cost to acquire and produce wet and dry sand, due mainly to higher sales volumes, and higher production costs on a per ton basis due to costs incurred to start the wet plants back up from the winter months;
$31.9 million increase in rail transportation-related expense, primarily due to:
$35.4 million increased rail shipping costs due to increased volumes sold in-basin; offset by
$2.7 million decreased rail lease expense; and
$0.9 million decreased railcar storage costs;
$2.8 million increase in costs of transload facilities; and

$5.4 million write down of sand inventory in the first quarter of 2016 based on our lower of cost or market analysis. This write down is attributed to declining market conditions and a significant decline in prices.
Selling, general and administrative expenses
The $1.5 million increase in selling, general and administrative expenses is attributable primarily to:
$2.1 million increase in employee-related costs due to higher staffing and bonus accruals;
$0.6 million in increased equity-based compensation expense;
$0.4 million increase in outside professional services, offset by
$1.7 million decrease in bad debt expense.
Interest expense
Net interest expense decreased $1.6 million mainly due to lower average balances on outstanding revolving credit facility, offset by the addition of the second lien term loan and higher average interest rates in 2017.
Other
Other expenses decreased $2.3 million due to a mark-to-market gain recognized in 2017 for a change in the fair value of the warrant issued in August 2016.
Contract and project terminations
During the first half of 2016, we negotiated various railcar lease contracts. As part of these negotiations, we paid $4.0 million as contract termination fees to a railcar lease vendor. See Note 4 to our Condensed Consolidated Financial Statements for further discussion.
Discontinued Operations
We completed the sale of our Fuel business on August 31, 2016, thus we did not have any operations for the Fuel business in 2017.
During the three months ended June 30, 2017, we wrote off a non-cash charge of $2.7 million of the hydrotreator and pipeline escrow receivables relating to completion delays and cost overruns.
Liquidity and Capital Resources 
Sources of Liquidity
Our principal liquidity requirements are to finance current operations, fund capital expenditures, includingfinance acquisitions from time to time, to service our debt and to pay distributions to partners.  Our sources of liquidity generally include cash generated by our operations, borrowings under our revolving Credit Agreementcredit and security agreement and issuances of equity and debt securities.  We depend on the Credit Facility for both short-term and long-term capital needs and may use borrowings under our Credit Facility to fund our operations and capital expenditures to the extent cash generated by our operations is insufficient in any period. WeFollowing our entry into the Credit Agreement and the Second Lien Note Purchase Agreement (described below), we believe that cash generated from our liquidity sources will be sufficient to meet our working capital and capital expenditure needs for at least the next 12 months.
In addition to our continued focus on generating and preserving cash from operations and maintaining availability under the Credit Facility, we may seek access to the capital markets for additional liquidity through equity and debt offerings. Any new issuances may take the form of public or private offerings for cash, equity issued to consummate acquisitions or equity issued in exchange for a portion of our outstanding debt. We may also from time to time seek to retire or purchase outstanding debt through cash purchases and/or exchanges for equity or other debt securities, in open market purchases, privately negotiated transactions or otherwise. However, there can be no assurance that we will be able to complete any of these transactions on favorable terms or at all.
For 2018, we expect to spend between $70 million and $90 million in capital expenditures to fund the expansion of our San Antonio operation and finance various capital projects that offer attractive rates of return.

Revolving Credit Facility
On June 27, 2014,January 5, 2018, we entered into an amendeda $75.0 million Second Amended and restated revolving creditRestated Revolving Credit and security agreement (as amended, theSecurity Agreement (the “Credit Agreement”), among Emerge Energy Services LP,the Partnership, as parent guarantor, each of its subsidiaries, as borrowers, (the “Borrowers”), and PNC Bank, National Association (“PNC Bank”), as administrative agent and collateral agent, (the “agent”), and the other lenders party thereto. The Credit Agreement replaced the Prior Credit Agreement. The Credit Agreement provides for a $75.0 million asset-based revolving credit facility, and a $20.0 million sublimit for the issuance of letters of credit. The Credit Agreement matures on June 27, 2019 and, after giving effect to the amendments described below, consists of a $190 million revolving credit facility, which included a sub-limit of up to $20 million for letters of credit, and incurs interest at a rate equal to either, at our option, LIBOR plus 5.00% or the base rate plus 4.00%. We also incur a commitment fee of 0.375% on committed amounts that are neither used for borrowings nor under letters of credit.January 5, 2022. Substantially all of theour assets of the Borrowers are pledged as collateral under the Credit Agreement.
On August 31, 2016, we closed the sale of the Fuel business, used the net proceeds therefrom to repay outstanding borrowings under the Credit Agreement and entered into Amendment No. 11 to the Credit Agreement with the Borrowers, the lenders and the agent. Amendment No. 11, among other things, restated the Credit Agreement and provided a full waiver for all defaults or events of default arising out of our failure to comply with the financial covenant to generate minimum amounts of adjusted EBITDA during the quarters ended March 31, 2016, June 30, 2016 and September 30, 2016 and the covenant to maintain the minimum amount of excess availability for any date prior to September 1, 2016.
Pursuant to Amendment No. 11, the Credit Agreement now requires the Partnership to maintain the following financial covenants:
a covenant to maintain $15 million of excess availability (as defined in the Credit Agreement);
a covenant to limit capital expenditures (as defined in the Credit Agreement) to certain maximum amounts for each quarter through March 31, 2019;
beginning with the quarter ending June 30, 2017, a covenant to generate consolidated EBITDA (as defined in the Credit Agreement) in certain minimum amounts;

beginning with the quarter ending March 31, 2018, a covenant to maintain an interest coverage ratio (as defined in the Credit Agreement) of not less than 2.00 to 1.00, which is scheduled to increase to 3.00 to 1.00 for the fiscal quarter ending March 31, 2019; and
a covenant to raise at least $31.2 million of net proceeds from the issuance and sale of common equity by November 30, 2016, which was satisfied by our underwritten sale of common units which closed on November 23, 2016.
In addition, the Credit Agreement also prohibits us from making cash distributions to our unitholders and requires all cash receipts by us and our subsidiaries to be swept on a daily basis and used to reduce outstanding borrowings under the Credit Agreement.
On April 12, 2017, the Partnership entered into Amendment No. 12 to the Credit Agreement. The Amendment amended the Revolving Credit Agreement to permit the Partnership and the Borrowers to enter into the Second Lien Term Loan Agreement and to reduce commitments under thefirst lien basis. This revolving credit facility to $190 million, and further reducing on a quarterly basis to $125 million for the quarter beginning January 1, 2019.
We believe that we will be able to maintain compliance with the covenants and restrictions under the Credit Agreement, as amended, for at least the next 12 months.
Second Lien Term Loan Agreement
On April 12, 2017, we entered into a new $40 million second lien senior secured term loan facility with our wholly-owned subsidiaries Emerge Energy Services Operating LLC and Superior Silica Sands LLC, as borrowers (the “Borrowers”) and U.S. Bank National Association as disbursing agent and collateral agent (the “Second Lien Term Loan Agreement”). The Second Lien Term Loan Agreement matures on April 12, 2022. Proceeds of the new term credit facility were usedis available to (i) pay down a portion of the ourrefinance existing revolving credit facility,indebtedness, (ii) fund the acquisition described in Note 2, (iii) pay fees and expenses incurred in connection with the new term credit facility and (iv)(iii) for general business purposes. Substantially all of our assets are pledged as collateral on a second lien basis under the Second Lien Term Loan Agreement.purposes, including working capital requirements, capital expenditures, permitted acquisitions, making debt payments when due, and making distributions and dividends.
The Second Lien Term LoanCredit Agreement contains various covenants and restrictive provisions and also requires the maintenance of certain financial covenants as follows:
a minimum liquidity requirement of $20.0 million at all times;
beginning with the fiscal quarter ending March 31, 2018, an interesta total leverage ratio of a maximum of 5.50:1.00 decreasing quarterly thereafter to 3.00:1.00 for the fiscal quarter ending December 31, 2018, and thereafter;
beginning with the fiscal quarter ending March 31, 2018, a minimum fixed charge coverage ratio of not less than 1.70:1.10:1.00; and
a limit on capital expenditures, subject to certain availability thresholds.
Loans under the Credit Agreement bear interest at our option at either (i) a base rate, which will be the base commercial lending rate of PNC Bank, as publicly announced to be in effect from time to time, plus an applicable margin ranging from 0.75% to 1.25% based on total leverage ratio; or (ii) LIBOR plus an applicable margin ranging from 1.75% to 2.25% based on the Partnership’s total leverage ratio.
Second Lien Note Purchase Agreement
On January 5, 2018, the Partnership as guarantor, and the Partnership’s wholly owned subsidiaries Emerge Energy Services Operating LLC and Superior Silica Sands LLC, as issuers, entered into a $215 million second lien note purchase agreement with the purchasers thereunder (the “Second Lien Note Purchase Agreement”). The notes issued under the Second Lien Note Purchase Agreement will mature on January 5, 2023. Proceeds of the sale of the notes under the Second Lien Note Purchase Agreement will be used (i) to fully pay off the Partnership’s existing second lien term credit facility, (ii) to fully pay off the obligations under the Partnership’s Prior Credit Agreement, (iii) to finance capital expenditures, (iv) to pay fees and expenses incurred in connection with the new second lien facility and (v) for general business purposes. Substantially all of the Partnership’s assets are pledged as collateral on a second lien basis. 
The Second Lien Note Purchase Agreement contains various covenants and restrictive provisions and also requires the maintenance of certain financial covenants as follows: 
a minimum liquidity requirement of $20.0 million at all times;
beginning with the fiscal quarter ending March 31, 2018, a total leverage ratio of a maximum of 6.00:1.00 increasingdecreasing quarterly thereafter to 2.55:3.00:1.00 for the fiscal quarter ending March 31, 2019, and thereafter;
beginning with the fiscal quarter ending June 30, 2017,March 31, 2018, a minimum EBITDAfixed charge coverage ratio of not less than $637,500 for such fiscal quarter,1.10:1.00, increasing quarterly to $50 million2.00:1.00 for the four fiscal quarter period ending June 30,March 31, 2019, and thereafter; and
minimum excessa limit on capital expenditures, subject to certain availability thresholds. 
Commencing on September 30, 2018, we are required to make quarterly principal payments (without premium or penalty) equal to (i) for each fiscal quarter ending on or prior to December 31, 2019, 1.25%, and (ii) for each fiscal quarter thereafter, 1.875%, of at least $12.75the original principal amount. Accordingly, on March 31, 2018, we have classified $8.1 million so longof principal as the Revolving Credit Agreement remains in effect.a current liability.
LoansThe notes under the Second Lien Term LoanNote Purchase Agreement will bear interest at 11.0% per annum until December 31, 2018, and ranging from 10.00% per annum to 12.00% per annum thereafter, depending on the Partnership’s option at either the base rate plus 9.00%, or LIBOR plus 10.00%.our leverage ratio.
Covenants Compliance
At June 30, 2017,March 31, 2018, we were in compliance with our loan covenants and had undrawn availability totaling $43.6 million under the Credit Agreement, well above the minimum availability required under our current covenants. Our outstanding borrowings under the Credit Agreement bore interest at a weighted-average rate of 6.51% and the borrowings under the Second Lien Term Loan Agreement bore interest at a weighted-average rate of 11.16%.

Liquidity Trends
Beginning in the second half oflate 2014 and continuing through the middle of 2016, prices for natural gas, crude oil and refined fuels were extremely volatile and decreased significantly. Although oil and gas drilling and completions activity has improved significantly in the last 12 months,two years, our cash flows from operating activities are subject to significant quarterly variations as volatile commodity prices influence demand for our frac sand. In addition, after closing the sale of our Fuel business we are more dependent on the volatility in demand for frac sand without the benefit of cash flows generated by our Fuel business in periods of stable commodity prices. Therefore, the cash generated by our operations are driven by a number of factors beyond our control, including global and regional product supply and demand, weather, product distribution, refining and processing capacity and other supply chain dynamics, among other factors. Our liquidity needs may not be met solely by cash generated from operations, and we expect to continue relying on borrowings under the Credit Agreement as source of future liquidity.
However, our ability to comply with the restrictions and covenants of the Credit Agreement and the Second Lien Term LoanNote Purchase Agreement is uncertain and will be affected by the amount of cash flow from our operations and events or circumstances beyond our control, including events and circumstances that may stem from the condition of financial markets and commodity price levels. If in the future we are unable to comply with the financial covenants of the Credit Agreement and the Second Lien Note Purchase Agreement and the lenders are unwilling to provide us with additional flexibility or a waiver, we may be forced to repay or refinance amounts then outstanding under the Credit Agreement and the Second Lien Note Purchase Agreement and seek alternative sources of capital to fund our business and anticipated capital expenditures. Any such alternative sources of capital, such as equity transactions or debt financing, may be on terms less favorable or at higher costs than our current financing sources, depending on future market conditions and other factors, or may not be available at all.
Cash Flow Summary 
The table below summarizes our cash flows.flows:
Six Months Ended June 30, Three Months Ended March 31, 
2017 2016 2018 2017 
        
($ in thousands) ($ in thousands) 
Cash flows from operating activities$(7,173) $(13,032) $10,744
 $(12,939) 
Cash flows from investing activities$(23,622) $(11,012) $(30,093) $(1,392) 
Cash flows from financing activities$30,980
 $6,332
 $22,309
 $16,426
 
Cash and cash equivalents at beginning of period$4
 $20,870
 $5,729
 $4
 
Cash and cash equivalents at end of period$189
 $3,158
 $8,689
 $2,099
 
Operating cash flows 
Cash flows from operating activities have generally trended the same as our net income (loss) adjusted for non-cash items of depreciation, depletion and amortization, equity-based compensation, amortization of deferred financing costs, contract termination costs, unrealized losses on derivative instruments, and unrealized (gain) loss on fair value of warrants. TheSignificant changes in our operating assetsworking capital resulted from rapid growth of sales and liabilities were also significantly impactedbillings to support our expanding business, offset by higher accounts receivablelower inventory balances resulting from higher sales of sand and higher prices during the first sixthree months of 2017.2018.
Investing cash flows 
Cash flows used in investing activities increased during the sixthree months ended June 30, 2017March 31, 2018, due to the acquisition of assets from Osburn Materials offset by decrease in our capital expenditures. Capital expenditures in the first six months of 2016 related to the Fuel business. Additionally, as a resultconstruction of the current market conditions and covenants under our Credit Agreement, we haveSan Antonio plants. We had significantly curtailed our capital expenditures to include only those projects with the potential for rapid returns, and comply with our bank covenants that limitlimited capital expenditures.expenditures during the three months ended March 31, 2017.

Financing cash flows 
Our cash balance as of June 30, 2017 is $0.2March 31, 2018, was $8.7 million compared to $4,000$5.7 million as of December 31, 20162017, and $3.2$2.1 million as of June 30, 2016.March 31, 2017. During 2017, We are currentlywere subject to a cash dominion requirement as per Amendment No. 11 to our Prior Credit Agreement, which requiresrequired all cash receipts by us and our subsidiaries to be swept on a daily basis and used to reduce outstanding borrowings under the Credit Agreement. We managemaintained a minimal cash balance and managed our cash on a daily basis and makemade advances against the revolver based on our daily disbursements. Following our entry into our Credit Agreement on January 5, 2018, we are in compliance with the requirements for excess availability and no longer in a dominion period for purposes of the agreement.
The main categories of our financing cash flows can be summarized as follows:
Six Months Ended June 30, Three Months Ended March 31, 
2017 2016 2018 2017 
        
($ in thousands) ($ in thousands) 
Net debt proceeds (payments)$35,824
 $10,894
 $34,928
 $18,171
 
Payment of financing costs(11,964) (163) 
Other(4,844) (4,562) (655) (1,582) 
Total$30,980
 $6,332
 $22,309
 $16,426
 
In April 2017,January 2018, we entered into athe Credit Agreement and Second Lien Note Purchase Agreement described in Note 4 to our Condensed Consolidated Financial Statements. Proceeds of the sale of the notes under the Second Lien Note Purchase Agreement were used (i) to fully pay off the $40 million Partnership’s existing second lien term loan for $40 million. Proceeds of the new term credit facility, were used(ii) to (i)fully pay down a portion ofoff the ourobligations under the Partnership’s existing revolving credit facility, (ii) fund the acquisition described in Note 2 (iii) to finance capital expenditures, (iv) to pay fees and expenses incurred in connection with the new term creditsecond lien facility and (iv)(v) for general business purposes.
Critical Accounting Estimates
Significant judgment is often required in estimating the fair values of assets acquired. We engaged a third-party valuation specialist in estimating fair values of the assets acquired. We used our best estimates and assumptions to allocate the cost of the acquisition to the assets acquired on a relative fair value basis at the acquisition date.  The preliminary fair value estimates are based on available historical information and on expectations and assumptions about the future production and sales volumes, market demands, the average selling price of sand and the discount factor used in estimating future cash flows. While we believe those expectations and assumptions are reasonable, they are inherently uncertain. Additionally, we are finalizing the sand reserves estimates. Transaction costs incurred for the acquisition are capitalized as a component of the cost of the assets acquired.
ADJUSTED EBITDA 
We calculate Adjusted EBITDA, a non-GAAP measure, in accordance with our current Credit Agreement as: net income (loss) plus consolidated interest expense (net of interest income), income tax expense, depreciation, depletion and amortization expense, non-cash charges and losses that are unusual or non-recurring less income tax benefits and gains that are unusual or non-recurring and other adjustments allowable under our current Credit Agreement.   Adjusted EBITDA is used as a supplemental financial measure by our management and external users of our financial statements, such as investors and commercial banks, to assess: 
our debt covenant compliance. Adjusted EBITDA is a key component of critical covenants to our Credit Agreement;
the financial performance of our assets without regard to the impact of financing methods, capital structure or historical cost basis of our assets;
the viability of capital expenditure projects and the overall rates of return on alternative investment opportunities;
our liquidity position and the ability of our assets to generate cash sufficient to make debt payments and to make distributions; and
our operating performance as compared to those of other companies in our industry without regard to the impact of financing methods and capital structure.
We believe that Adjusted EBITDA provides useful information to investors because, when viewed with our GAAP results and the accompanying reconciliations, it provides a more complete understanding of our performance than GAAP results alone.  We also believe that external users of our financial statements benefit from having access to the same financial measures that management uses in evaluating the results of our business. 
Adjusted EBITDA should not be considered an alternative to, or more meaningful than, net income, operating income, cash flows from operating activities or any other measure of financial performance presented in accordance with GAAP.  Moreover, our Adjusted EBITDA as presented may not be comparable to similarly titled measures of other companies. 

Reconciliation of Net Income (Loss) and Operating Cash Flows to Adjusted EBITDA 
The following table present a reconciliation ofreconciles net income (loss) to Adjusted EBITDA for the three months ended June 30, 2017March 31, 2018, and 2016:2017:
 Continuing Discontinued Consolidated 
   
 Three Months Ended June 30, 
 2017 2016 2017 2016 2017 2016 
             
 ($ in thousands) 
Net income (loss)$(3,425) $(28,150) $(2,657) $5,253
 $(6,082) $(22,897) 
Interest expense, net5,082
 5,283
 
 686
 5,082
 5,969
 
Depreciation, depletion and amortization5,675
 4,870
 
 
 5,675
 4,870
 
Provision for income taxes
 1
 
 5
 
 6
 
EBITDA7,332
 (17,996) (2,657) 5,944
 4,675
 (12,052) 
Equity-based compensation expense330
 (335) 
 131
 330
 (204) 
Contract and project terminations
 10
 
 
 
 10
 
Reduction in escrow receivable
 
 2,657
 
 2,657
 
 
Provision for doubtful accounts
 
 
 38
 
 38
 
Accretion expense29
 30
 
 
 29
 30
 
Retirement of assets66
 
 
 67
 66
 67
 
Fuel division selling expenses
 
 
 679
 
 679
 
Other state and local taxes456
 483
 
 89
 456
 572
 
Non-cash deferred lease expense2,329
 1,607
 
 
 2,329
 1,607
 
Unrealized gain on fair value of warrant(3,008) 
 
 
 (3,008) 
 
Other adjustments allowable under our Credit Agreement
 173
 
 
 
 173
 
Adjusted EBITDA$7,534
 $(16,028) $
 $6,948
 $7,534
 $(9,080) 


The following table present a reconciliation of net income (loss) to Adjusted EBITDA for the six months ended June 30, 2017 and 2016:
Continuing Discontinued Consolidated 
  Three Months Ended March 31, 
Six Months Ended June 30, 2018 2017 
2017 2016 2017 2016 2017 2016     
($ in thousands) ($ in thousands)
Net income (loss)$(14,815) $(62,591) $(2,657) $5,479
 $(17,472) $(57,112) $1,486
 $(11,390) 
Interest expense, net8,280
 9,877
 
 1,283
 8,280
 11,160
 10,492
 3,198
 
Depreciation, depletion and amortization10,331
 9,777
 
 2,354
 10,331
 12,131
 4,861
 4,656
 
Provision for income taxes
 21
 
 11
 
 32
 
Provision (benefit) for income taxes97
 
 
EBITDA3,796
 (42,916) (2,657) 9,127
 1,139
 (33,789) 16,936
 (3,536) 
Equity-based compensation expense677
 (98) 
 234
 677
 136
 434
 347
 
Write-down of sand inventory
 5,394
 
 
 
 5,394
 
Contract and project terminations
 4,036
 
 
 
 4,036
 1,689
 
 
Reduction in escrow receivable
 
 2,657
 
 2,657
 
 
Provision for doubtful accounts
 1,672
 
 74
 
 1,746
 3
 
 
Accretion expense58
 59
 
 
 58
 59
 31
 29
 
Retirement of assets60
 
 
 67
 60
 67
 2
 (6) 
Reduction in force
 76
 
 
 
 76
 
Fuel division selling expenses
 
 
 679
 
 679
 
Other state and local taxes880
 952
 
 236
 880
 1,188
 395
 424
 
Non-cash deferred lease expense4,230
 1,607
 
 
 4,230
 1,607
 (2,576) 1,901
 
Unrealized gain on fair value of warrant(2,312) 
 
 
 (2,312) 
 
Unrealized (gain) loss on fair value of warrant(677) 696
 
Other adjustments allowable under our Credit Agreement213
 208
 
 
 213
 208
 1,149
 213
 
Adjusted EBITDA$7,602
 $(29,010) $
 $10,417
 $7,602
 $(18,593) $17,386
 $68
 

The following table reconciles Consolidated Adjusted EBITDA to our operating cash flows for the three and six months ended June 30, 2017March 31, 2018, and 2016:2017:
Three Months Ended June 30, Six Months Ended June 30, Three Months Ended March 31, 
            
2017 2016 2017 2016 2018 2017 
            
($ in thousands) ($ in thousands)
Adjusted EBITDA$7,534
 $(9,080) $7,602
 $(18,593) $17,386
 $68
 
Interest expense, net(3,975) (4,347) (6,659) (8,989) (5,964) (2,684) 
Income tax expense(456) (578) (880) (1,220) (493) (424) 
Contract and project terminations - non-cash
 
 
 (25) 
Reduction in force
 
 
 (76) 
Write-down of sand inventory
 
 
 (5,394) 
Other adjustments allowable under our Credit Agreement
 (173) (213) (208) (1,149) (213) 
Fuel division selling expenses
 (679) 
 (679) 
Permitted acquisition transaction expenses
 
 
 
 
Cost to retire assets19
 9
 19
 9
 
Non-cash deferred lease expense(2,329) (1,607) (4,230) (1,607) 2,576
 (1,901) 
Change in other operating assets and liabilities4,973
 5,714
 (2,812) 23,750
 (1,612) (7,785) 
Cash flows from operating activities:$5,766
 $(10,741) $(7,173) $(13,032) $10,744
 $(12,939) 
            
Cash flows from investing activities:$(22,230) $(6,099) $(23,622) $(11,012) $(30,093) $(1,392) 
            
Cash flows from financing activities:$14,554
 $8,637
 $30,980
 $6,332
 $22,309
 $16,426
 

ITEM 3.                                               QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK 
Information about market risks for the sixthree months ended June 30, 2017,March 31, 2018, does not differ materially from that discussed under Item 7A of our Annual Report on Form 10-K for the year ended December 31,2016.31,2017. Following the sale of the Fuel business, risks with respect to prices of refined fuels products and transmix, wholesale fuel and other feedstocks are no longer applicable to or continuing operations.
ITEM 4.                                                CONTROLS AND PROCEDURES 
Evaluation of Disclosure Controls and Procedures
Our management, with the participation of our Chief Executive Officer and Chief Financial Officer, has evaluated the effectiveness of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act) as of June 30, 2017.March 31,

2018. Based on such evaluation, our Chief Executive Officer and Chief Financial Officer have concluded that, as of such date, our disclosure controls and procedures were effective.
Changes in Internal Control over Financial Reporting
There were no changes in our internal control over financial reporting identified in management’s evaluation required by Rule 13a-15(d) and 15d-15(d) of the Exchange Act during the quarter ended June 30, 2017March 31, 2018 that materially affected, or that are reasonably likely to materially affect, our internal control over financial reporting.
PART II                                     OTHER INFORMATION 
ITEM 1.                                     LEGAL PROCEEDINGS 
Although we are, from time to time, involved in litigation and claims arising out of our operations in the normal course of business, we do not believe that we are a party to any litigation that could have a material adverse impact on our financial condition or results of operations.  We are not aware of any undisclosed significant legal or governmental proceedings against us, or contemplated to be brought against us.  We maintain such insurance policies with insurers in amounts and with coverage and deductibles as our

general partner believes are reasonable and prudent.  However, we cannot assure you that this insurance will be adequate to protect us from all material expenses related to potential future claims for personal and property damage or that these levels of insurance will be available in the future at acceptable prices. 
Environmental Matters
On November 21, 2013, the EPA issued a General Notice Letter and Information Request (“Notice”) under Section 104(e) of CERCLA to one of our subsidiaries operating within the Fuel business.  The Notice provides that the subsidiary may have incurred liability with respect to the Reef Environmental site in Alabama, and requested certain information in accordance with Section 107(a) of CERCLA.  We timely responded to the Notice.  At this time, no specific claim for cost recovery has been made by the EPA (or any other potentially responsible party) against us.  There is uncertainty relating to our share of environmental remediation liability, if any, because our allocable share of wastewater is unknown and the total remediation cost is also unknown.  Consequently, management is unable to estimate the possible loss or range of loss, if any.  We have not recorded a loss contingency accrual in our financial statements.  In the opinion of management, the outcome of such matters will not have a material adverse effect on our financial position, liquidity or results of operations.
In January 2016, AEC experienced a leak in its proprietary fuel pipeline that connects the bulk storage terminal to the transmix facility located in Birmingham, Alabama. AEC management notified the controlling governmental agencies of this condition, and commenced efforts to locate the leak, determine the cause of the leak, repair the leak, and remediate known contamination to the proximate soils and sub-grade. These efforts remain in progress, and management does not expect the costs to repair and remediate these conditions to have a material impact on our financial position, results of operations, or cash flows.
Under the Restated Purchase Agreement, we agreed to indemnify Sunoco against these and any other environmental liabilities associated with the business and operations of the Fuel business prior to its sale, subject to certain exceptions. We have obtained an environmental insurance policy which, pursuant to the terms of the Restated Purchase Agreement, acts as the first recourse coverage for any pre-closing environmental liability asserted by Sunoco with our indemnification obligation being for any claims in excess of the insurance policy coverage or in the event a claim is denied under the insurance policy. Our management does not expect our environmental indemnification obligations pursuant to the Restated Purchase Agreement will have a material adverse effect on our future results of operations, financial position or cash flow.
ITEM 1A.                                               RISK FACTORS 
In addition to the other information set forth in this report, you should carefully consider the factors discussed in Part I, “Item 1A. Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2016,2017, which could materially affect our business, financial condition or future results.  The risks described in this report and in our Annual Report on Form 10-K are not the only risks we face.  Additional risks and uncertainties not currently known to us or that we currently deem to be immaterial also may materially adversely affect our business, financial condition or future results. 
ITEM 4.                                     MINE SAFETY DISCLOSURES 
We adhere to a strict occupational health program aimed at controlling exposure to silica dust, which includes dust sampling, a respiratory protection program, medical surveillance, training, and other components. We designed our safety program to ensure compliance with the standards of our Occupational Health and Safety Manual and U.S. Federal Mine Safety and Health Administration (“MSHA”) regulations. For both health and safety issues, extensive training is provided to employees. We have organized safety committees at our plants made up of both salaried and hourly employees. We perform internal health and safety

audits and conduct tests of our abilities to respond to various situations. Our health and safety department administers the health and safety programs with the assistance of corporate personnel and plant environmental, health and safety coordinators.
All of our production facilities are classified as mines and are subject to regulation by MSHA under the Federal Mine Safety and Health Act of 1977 (the “Mine Act”). MSHA inspects our mines on a regular basis and issues various citations and orders when it believes a violation has occurred under the Mine Act. Following passage of The Mine Improvement and New Emergency Response Act of 2006, MSHA significantly increased the numbers of citations and orders charged against mining operations. The dollar penalties assessed for citations issued has also increased in recent years. Information concerning mine safety violations or other regulatory matters required by Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act and Item 104 of Regulation S-K (17 CFR 229.104) is included in Exhibit 95.1 to this Quarterly Report on Form 10-Q. 

ITEM 6.                                     EXHIBITS 
Exhibit
Number
 Description
   
 
   
 
   
 
   
 
   
 
   
 
   
 
   
10.1*† 
   
10.2*† 
   
 
   
 
   
 
   
 
   
 
   
101* Interactive Data Files - XBRL.
 
*    Filed herewith (or furnished in the case of Exhibits 32.1 and 32.2).
†    Certain portions have been omitted pursuant to a confidential treatment request. Omitted information has been separately filed with the Securities and Exchange Commission.



SIGNATURES
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. 
Date: August 4, 2017May 3, 2018  
 EMERGE ENERGY SERVICES LP
    
 By:EMERGE ENERGY SERVICES GP LLC, its general partner 
    
 By:/s/ Rick Shearer 
  Rick Shearer 
  President and Chief Executive Officer 
  (Principal Executive Officer) 
    
 By:/s/ Deborah Deibert 
  Deborah Deibert 
  Chief Financial Officer 
  (Principal Financial Officer) 

INDEX TO EXHIBITS
32
Exhibit
Number
Description
3.1Certificate of Limited Partnership of Emerge Energy Services LP (incorporated by reference to Exhibit 3.1 to the Registrant’s Registration Statement on Form S-1, Registration No. 333-187487).
3.2Amendment to Certificate of Limited Partnership of Emerge Energy Services LP (incorporated by reference to Exhibit 3.2 to the Registrant’s Registration Statement on Form S-1, Registration No. 333-187487).
3.3First Amended and Restated Limited Partnership Agreement of Emerge Energy Services LP, dated as of May 14, 2013 (incorporated by reference to Exhibit 3.1 to the Registrant’s Current Report on Form 8-K, filed with the SEC on May 20, 2013).
3.4Amendment No. 1 to the First Amended and Restated Agreement of Limited Partnership of Emerge Energy Services LP, dated as of August 15, 2016 (incorporated by reference to Exhibit 3.1 to the Registrant’s Current Report on Form 8-K, filed with the SEC on August 16, 2016).
3.5Certificate of Limited Formation of Emerge Energy Services GP LLC (incorporated by reference to Exhibit 3.5 to the Registrant’s Registration Statement on Form S-1, Registration No. 333-187487).
3.6Amendment to Certificate of Formation of Emerge Energy Services GP LLC (incorporated by reference to Exhibit 3.6 to the Registrant’s Registration Statement on Form S-1, Registration No. 333-187487).
3.7Amended and Restated Limited Liability Company Agreement of Emerge Energy Services GP, LLC, dated as of May 14, 2013 (incorporated by reference to Exhibit 3.2 to the Registrant’s Current Report on Form 8-K, filed with the SEC on May 20, 2013).
10.1*†Sand Supply Agreement, dated May 19, 2017, between Superior Silica Sand and Liberty Oilfield Service, LLC.
10.2*†Sand Supply Agreement, dated July 19, 2017, between Superior Silica Sand and EP Energy E&P Company, L.P.
31.1*Certification of Chief Executive Officer under Section 302 of the Sarbanes-Oxley Act of 2002.
31.2*Certification of Chief Financial Officer under Section 302 of the Sarbanes-Oxley Act of 2002.
32.1*Certification of Chief Executive Officer under Section 906 of the Sarbanes-Oxley Act of 2002.
32.2*Certification of Chief Financial Officer under Section 906 of the Sarbanes-Oxley Act of 2002.
95.1*Mine Safety Disclosure Exhibit.
101*Interactive Data Files - XBRL.

*    Filed herewith (or furnished in the case of Exhibits 32.1 and 32.2).

†    Certain portions have been omitted pursuant to a confidential treatment request. Omitted information has been separately filed with the Securities and Exchange Commission.


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