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

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of the Securities
Exchange Act of 1934 (Amendment No.     )

 Filed by the Registrant   x
 Filed by a Party other than the Registrant   o
 
 Check the appropriate box:

 o   Preliminary Proxy Statement
 o  Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))
 x   Definitive Proxy Statement
 o   Definitive Additional Materials
 o   Soliciting Material Pursuant to §240.14a-12

United States Lime & Minerals, Inc.
(Name of Registrant as Specified In Its Charter)
 
(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

      Payment of Filing Fee (Check the appropriate box):

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       3) Per unit price or other underlying value of transaction computed pursuant to Exchange Act Rule 0-11 (set forth the amount on which the filing fee is calculated and state how it was determined):


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SEC 1913 (11-01)Persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.


(UNITED STATES LIME & MINERALS, INC. LOGO)(UNITED STATES LIME & MINERALS LOGO)
United States Lime & Minerals, Inc.
13800 Montfort Drive,5429 LBJ Freeway, Suite 330230
Dallas, Texas 75240
April 7, 20066, 2007
Dear Shareholders:
 
You are cordially invited to attend the 20062007 Annual Meeting of Shareholders at 10:00 a.m. on Friday, May 5,4, at the Crowne Plaza Suites, 7800 Alpha Road, Dallas, Texas, 75240. Please refer to the back of this letter for directions. The Meetingmeeting will be preceded by an informal reception starting at 9:30 a.m., at which you will have an opportunity to meet the Directorsour directors and Officers of the Company.officers.
 
Enclosed with this letter is a Notice of the Annual Meeting, Proxy Statement,proxy statement, and Proxy Card.proxy card. I urge you to complete, sign, date, and mail the enclosed Proxy Cardproxy card at your earliest convenience. Regardless of the size of your holdings, it is important that your shares be represented. If you attend the Meeting,meeting, you may withdraw your Proxyproxy and vote in person. You may also withdraw your Proxyproxy by submitting to the Company,us, prior to the Annual Meeting,meeting, a written notice of revocation.
 
I look forward to meeting and speaking with you at the Annual Meetingmeeting on May 5, 2006.4, 2007.
Sincerely,
-s- Timothy W. Byrne
Timothy W. Byrne
President and Chief Executive Officer
Sincerely,
-s- Timothy W. Byrne
Timothy W. Byrne
President and Chief Executive Officer
Enclosures


United States Lime & Minerals, Inc.INC.
Directions to the 20062007 Annual Meeting of Shareholders
Friday, May 5, 2006,4, 2007, at 10:00 a.m.
Crowne Plaza Suites
7800 Alpha Road
Dallas, Texas 75240
Directions from Dallas-Ft. Worth Airport:
  Take the North exit from the airport
 
  East on I-635 (Lyndon B. Johnson Freeway)
 
  Exit at Coit Road, turning North (left) onto Coit
 
  Turn left at first intersection onto Alpha Road
 
  Hotel entrance is on the left before junction with Blossomheath Road
Directions from Downtown Dallas:
  North on North Central Expressway (U.S. 75)
 
  Exit at Coit Road (exit passes over U.S. 75 and joins Coit)
 
  Continue North on Coit until you cross over I-635 (Lyndon B. Johnson Freeway)
 
  Turn left at first intersection onto Alpha Road
 
  Hotel entrance is on the left before junction with Blossomheath Road
(MAP)(DALLAS MAP)


TABLE OF CONTENTS

NOTICE OF 2007 ANNUAL MEETING OF SHAREHOLDERS
PROXY STATEMENT FOR 2007 ANNUAL MEETING OF SHAREHOLDERS To Be Held On May 4, 2007
INTRODUCTION
VOTING SECURITIES AND PRINCIPAL SHAREHOLDERS
SHAREHOLDINGS OF COMPANY DIRECTORS AND EXECUTIVE OFFICERS
PROPOSAL: ELECTION OF DIRECTORS
NOMINEES FOR DIRECTOR
EXECUTIVE OFFICERS WHO ARE NOT DIRECTORS
CORPORATE GOVERNANCE
REPORT OF THE AUDIT COMMITTEE
EXECUTIVE COMPENSATION
REPORT OF COMPENSATION COMMITTEE
DIRECTOR COMPENSATION
INDEPENDENT AUDITORS
OTHER MATTERS
SHAREHOLDER PROPOSALS


UNITED STATES LIME & MINERALS, INC.
13800 Montfort Drive5429 LBJ Freeway
Suite 330230
Dallas, Texas 75240
NOTICE OF 20062007 ANNUAL MEETING OF SHAREHOLDERS
To Be Held On May 5, 20064, 2007
To the Shareholders of

United States Lime & Minerals, Inc.:
 
Notice is hereby given that the 20062007 Annual Meeting of Shareholders of United States Lime & Minerals, Inc., a Texas corporation (the “Company”), will be held on Friday, the 5th4th day of May, 2006,2007, at 10:00 a.m. local time, at the Crowne Plaza Suites, 7800 Alpha Road, Dallas, Texas 75240 (the “Annual Meeting”), for the following purposes:
1.
1. To elect five directors to serve until the next annual meeting of shareholders and until their respective successors have been duly elected and qualified; and
2.To transact such other business as may properly be brought before the Annual Meeting or any adjournment thereof.
 
2. To transact such other business as may properly be brought before the Annual Meeting or any adjournment thereof.
Information regarding the matters to be acted upon at the Annual Meeting is contained in the Proxy Statementproxy statement accompanying this Notice.
 
The Board of Directors has fixed the close of business on March 24, 200623, 2007 as the record date for the determination of shareholders entitled to notice of and to vote at the Annual Meeting or any adjournment thereof. Only shareholders of record at the close of business on the record date are entitled to notice of and to vote at the Annual Meeting or any adjournment thereof. A complete list of such shareholders will be available for inspection during usual business hours for ten days prior to the Annual Meeting at the office of the Company in Dallas, Texas.
 
All shareholders are cordially invited to attend the Annual Meeting.Shareholders are urged, whether or not they plan to attend the Annual Meeting, to complete, sign, and date the accompanying Proxy Cardproxy card and to return it promptly in the postage-paid return envelope providedprovided.. A shareholder who has returned a Proxy Cardproxy card may withdraw the Proxyproxy by sending the Company a written notice of revocation or by attending the Annual Meeting and voting in person.
By Order of the Board of Directors,
-s- Timothy W. Byrne
-s- Timothy W. Byrne
Timothy W. Byrne
President and Chief Executive Officer
Dallas, Texas
April 7, 20066, 2007


(UNITED STATES LIME & MINERALS LOGO)US LIME & MINERALS LOGO)
UNITED STATES LIME & MINERALS, INC.
13800 Montfort Drive
5429 LBJ Freeway
Suite 330
230
Dallas, Texas 75240
PROXY STATEMENT
FOR
2006
2007 ANNUAL MEETING OF SHAREHOLDERS
To Be Held On May 5, 20064, 2007
INTRODUCTION
 
The accompanying form of proxy (the “Proxy Card”),card, mailed together with this proxy statement, (the “Proxy Statement”), is solicited by and on behalf of the Board of Directors of United States Lime & Minerals, Inc., a Texas corporation (the “Company”“company,” “we” or “our”), for use at the 2006our 2007 Annual Meeting of Shareholders of the Company (the “Annual Meeting”) to be held at the time and place and for the purposes set forth in the accompanying Notice. The approximate date on which this Proxy Statementproxy statement and the Proxy Cardproxy card were first sent to our shareholders of the Company is April 7, 2006.6, 2007.
 
Shares of the Company’sour common stock, par value $0.10 per share, (the “Common Stock”), represented by valid Proxy Cards,proxy cards, duly signed, dated, and returned to the Companyus and not revoked, will be voted at the Annual Meetingannual meeting in accordance with the directions given. In the absence of directions to the contrary, such shares will be voted:
FOR the election of the five nominees named in the Proxy Cardproxy card to theour Board of Directors of the Company.Directors.
 
If any other matter is properly brought before the Annual Meetingannual meeting for action at the Meeting,meeting, which is not currently anticipated, the persons designated to serve as proxies will vote on such matters in accordance with their best judgment.
 
Any shareholder of the Company returning a Proxy Cardproxy card has a right to withdraw the Proxyproxy at any time before it is exercised by attending the Annual Meetingannual meeting and voting in person or by giving written notice of such revocation to the Companyus addressed to Timothy W. Byrne, President and Chief Executive Officer, United States Lime & Minerals, Inc., 13800 Montfort Drive,5429 LBJ Freeway, Suite 330,230, Dallas, Texas 75240; however, no such revocation will be effective unless such notice of revocation has been received by the Companyus at or prior to the Annual Meeting.annual meeting.
VOTING SECURITIES AND PRINCIPAL SHAREHOLDERS
 
Only holders of record of Common Stockour common stock at the close of business on March 24, 2006,23, 2007, the record date for the Annual Meeting,annual meeting, are entitled to notice of and to vote at the Annual Meetingmeeting or any adjournment thereof. The presence of the holders of a majority of the outstanding shares of Common Stockcommon stock is necessary to constitute a quorum. On the record date for the Annual Meeting,meeting, there were issued and outstanding 6,143,0706,229,554 shares of Common Stock.common stock. At the Annual Meeting,meeting, each shareholder of record on March 24, 200623, 2007 will be entitled to one vote for each share of Common Stock registered in such shareholder’s name on the record date.

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The following table sets forth, as of March 24, 2006,23 2007, information with respect to shareholders known to the Companyus to be the beneficial owners of more than five percent of theour issued and outstanding shares of Common Stock:shares:
         
Name and Address Number of Shares Percent
of Beneficial Owner Beneficially Owned(2) of Class(2)
Inberdon Enterprises Ltd.  3,542,033   57.66%
1020-789 West Pender Street        
Vancouver, British Columbia        
Canada V6C 1H2(1)
        
         
Robert S. Beall  672,497   10.95%
5300 Miramar Lane        
Colleyville, Texas 76034        
 
         
Name and Address
 Number of Shares
 Percent
of Beneficial Owner
 Beneficially Owned(2) of Class(2)
 
Inberdon Enterprises Ltd.   3,594,033   57.69%
1020-789 West Pender Street
Vancouver, British Columbia
Canada V6C 1H2(1)
        
Robert S. Beall  674,997   10.84%
5300 Miramar Lane
Colleyville, Texas 76034
        
(1)Inberdon Enterprises Ltd. (“Inberdon”) is principally engaged in the acquisition and holding of securities of aggregate producing companies located in North America. All of the outstanding shares of Inberdon are held, indirectly through a number of private companies, by Mr. George M. Doumet.
 
(2)In the case of Inberdon, based on the Company’sour records as of March 24, 2006.23, 2007. In the case of Robert S. Beall, based on his Schedule 13G filed on February 10,October 9, 2006 reporting his beneficial ownership as of December 31, 2005.that date. Assuming Robert S.Mr. Beall continued to own 672,497674,997 shares on March 24, 2006,23, 2007, such shares would represent 10.95%10.84% of the class as of such date.
SHAREHOLDINGS OF COMPANY DIRECTORS AND EXECUTIVE OFFICERS
 
The table below sets forth the number of shares of Common Stock beneficially owned, as of March 24, 2006,23, 2007, by all of our directors and named executive officers of the Company individually and all directors and executive officers as a group:
                
 Number of Shares Percent Number of Shares
 Percent
Name Beneficially Owned(1) of Class Beneficially Owned(1) of Class
 
Timothy W. Byrne  160,502 (2)(4)  2.58%  121,845(2)(3)(4)  2.58%
Richard W. Cardin  8,000 (4) (5)   8,533(3)  (6)
Antoine M. Doumet  6,000 (3)(4) (5)   8,000(3)(5)  (6)
Wallace G. Irmscher  12,359 (4) (5)   14,408(3)  (6)
Edward A. Odishaw  7,500 (4) (5)   4,000(3)  (6)
Johnney G. Bowers  22,993 (2) (4) (5)   19,337(2)(3)  (6)
Billy R. Hughes  69,563 (2) (4)  1.13%  71,883(2)(3)(4)  1.13%
Richard D. Murray  39,500 (2) (4) (5) 
M. Michael Owens  8,300 (4) (5)   16,526(3)(4)  (6)
All Directors and Executive Officers as a Group (10 persons)  342,821 (2) (4)  5.42%
Russell W. Riggs  4,000(3)(4)  (6)
All Directors and Executive Officers as a Group (9 persons)  268,532(2)(3)(4)  4.22%
 
(1)All shares are directly held with sole voting and dispositive power unless otherwise indicated.
 
(2)Includes 6,845, 493, 3,860, and 4983,860 shares allocated to Messrs. Byrne, Bowers, Hughes, and Murray,Hughes, respectively, under the Company’sour 401(k) plan.
 
(3)The named individual is the brother of Mr. George M. Doumet, who indirectly owns all the outstanding shares of Inberdon.
(4)Includes the following shares subject to stock options exercisable within the next 60 days granted under theour 1992 Stock Option Plan, as Amended and Restated (the “1992 Plan”(“1992 plan”), or theour 2001 Long-Term Incentive Plan (the “2001 Plan”(“2001 plan”): Mr. Byrne, 86,223;57,500; Mr. Cardin, 6,000;2,000; Mr. Doumet, 6,000;8,000; Mr. Irmscher, 2,000; Mr. Odishaw, 2,000;4,000; Mr. Bowers, 19,000;14,833; Mr. Hughes, 28,000;30,000; Mr. Murray, 24,000;Owens, 8,500; and Mr. Owens, 10,500.Riggs, 2,500.
 
(5)(4)Includes the following shares of restricted stock granted under our 2001 plan: Mr. Byrne, 7,500; Mr. Hughes, 500; Mr. Owens, 900; and Mr. Riggs, 1,500.
(5)The named individual is the brother of Mr. George M. Doumet, who indirectly owns all of the outstanding shares of Inberdon.
(6)Less than 1%.


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PROPOSAL 1:PROPOSAL: ELECTION OF DIRECTORS
 
Five directors, constituting the entire Board of Directors, are to be elected at the Annual Meetingannual meeting to serve until the next annual meeting of shareholders and until their respective successors have been duly elected and qualified. All of the nominees are currently directors of the Company.directors.
 
Directors are elected by a plurality of the votes cast by the holders of shares entitled to vote in the election of directors at the Annual Meeting. The Company’sannual meeting. Our Restated Articles of Incorporation prohibit cumulative voting for the election of directors. All duly submitted and unrevoked Proxy Cardsproxy cards will be voted FOR the nominees selected by theour Board of Directors except where authorization to so vote is withheld. Votes withheld and broker non-votes are not counted in the election of directors.
 The
Our Board of Directors recommends that all shareholders vote “FOR” the election of all such nominees. If any nominee should become unavailable for election for any presently unforeseen reason, the persons designated to serve as proxies will have full discretion to vote for another person nominated by the Board.
NOMINEES FOR DIRECTOR
 
The five nominees for director are named below. Each has consented to serve as a director if elected. Set forth below is pertinent information with respect to each nominee:
Timothy W. Byrne
Mr. Byrne, age 48,49, rejoined the Companyus on December 8, 2000 as itsour President and Chief Executive Officer, positions he previously held during 1997 and 1998. Mr. Byrne has served the Company as a director since March 1991, and served in various positions, including Senior Vice President and Chief Financial Officer and Vice President of Finance and Administration, from 1990 to 1998. Prior to rejoining the Companyus in December 2000, Mr. Byrne was President of an Internet services and communications company focused on strategy, marketing, and technology.
Richard W. Cardin
Mr. Cardin, age 70,71, has served as a director of the Company since August 1998. He is a Certified Public Accountantcertified public accountant and retired partner of Arthur Andersen LLP since 1995, having spent 37 years with that firm. He was Office Managingoffice managing partner with Arthur Andersen LLP in Nashville, Tennessee from 1980 until 1994. He is a member of the Boardboard of Directorsdirectors of Atmos Energy Corporation, a natural gas utility company, and was, until the corporation was sold in November 2006, a member of the board of directors of Intergraph Corporation, a leading global provider of spatial information management software and services.
Antoine M. Doumet
Mr. Doumet, age 46,47, has served as a director of the Company since July 1993, as Chairman of the Board since May 2005 and as Vice Chairman prior to May 2005. He is a private businessman and investor. From 1989 to 1995, he served as a director of MELEC, a French electrical engineering and contracting company. From 1988 to 1992, Mr. Doumet served as vice president and a director of Lebanon Chemicals Company. Mr. Doumet is the brother of Mr. George M. Doumet, who indirectly owns all of the outstanding shares of Inberdon.
Wallace G. Irmscher
Mr. Irmscher, age 83,84, has served as a director of the Company since July 1993. He was a senior executive with 44 years of diversified experience in the construction and construction materials industry. From 1995 to 2003, Mr. Irmscher served as a director of N-Viro International Corporation, a company involved in the recycling of industrial waste. He also serves as an advisory board member of U.S. Concrete, Inc., a producer of construction materials. He is past Chairmanchairman of the American Concrete Paving Association (ACPA) and is presently a board member of the National Ready Mix Concrete Association (NRMCA). Mr. Irmscher has performed consulting services for various companies in the cement, construction, and environmental industries.


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Edward A. Odishaw
Mr. Odishaw, age 70,71, has served as a director of the Company since July 1993, as Vice Chairman of the Board since May 2005 and as Chairman from July 1993 until May 2005. Mr. Odishaw is Chairmanchairman of Austpro Energy Corporation, a public Canadian corporation. Between 1964 and 1999, he practiced law in Saskatchewan and British Columbia, Canada, with emphasis on commercial law, corporate mergers, acquisitions, and finance. Between 1992 and 1999, Mr. Odishaw was a Barristerbarrister and Solicitorsolicitor with the law firm of Boughton Peterson Yang Anderson, located in Vancouver, Canada. From 1972 to 1992, Mr. Odishaw was a Barristerbarrister and Solicitorsolicitor with the law firm of Swinton & Company, Vancouver, Canada. Mr. Odishaw holds directorships in numerous companies in Canada. Mr. Odishaw is a member in good standing of the Law Society of British Columbia and is a non-practicing member of the Law Society of Saskatchewan.
EXECUTIVE OFFICERS
WHO ARE NOT ALSO DIRECTORS
Johnney G. Bowers
Mr. Bowers, age 59, joined the Company in June 1997 and has served as Vice President — Manufacturing since that date. He has over 30 years of engineering and operating experience. From May 1991 until he joined the Company, Mr. Bowers served as Director of Engineering with Chemical Lime Company. Prior to May 1991, Mr. Bowers held various senior process engineering and project manager positions in the mining and processing industry.
Billy R. Hughes
Mr. Hughes, age 67,68, joined the Companyus in June 1973 and has served as Senior Vice President — Sales & Marketing since December 1998. He has over 30 years of experience in the lime and limestone industry. Mr. Hughes began his employment with the Companyus as a salesperson for the Arkansas Lime plant. In 1978, he was promoted to sales manager for Arkansas Lime. In 1983, Mr. Hughes was appointed Vice President — Sales and Marketing for both Arkansas Lime and Texas Lime.
Richard D. Murray
Mr. Murray, age 65, joined the Company in May 1995 and served as Vice President — Engineering until March 2001, when he was appointed Vice President and Plant Manager for Texas Lime Company. He has over 35 years of experience in various management and engineering positions. Prior to joining the Company, he was Vice President — Operations for Lone Star Industries, Inc., a leading cement manufacturer.
M. Michael Owens
Mr. Owens, age 52,53, joined the Companyus in August 2002 as itsour Vice President and Chief Financial Officer, Secretary and Treasurer. He has over 30 years of financial and accounting experience. Prior to joining the Company,us, Mr. Owens was Vice President — Finance at Sunshine Mining and Refining Company, (“Sunshine”), a silver mining company. Mr. Owens held various financial and accounting officer positions with Sunshine from 1983 to 2002.
Johnney G. Bowers
Mr. Bowers, age 60, joined us in June 1997 and has served as Vice President — Manufacturing since that date. He has over 30 years of engineering and operating experience. From May 1991 until he joined us, Mr. Bowers served as Director of Engineering with Chemical Lime Company. Prior to May 1991, Mr. Bowers held various senior process engineering and project manager positions in the mining and processing industry.
Russell W. Riggs
Mr. Riggs, age 48,49, joined the Companyus in January 2006 and subsequently was appointed as itsour Vice President — Production. He has over 25 years of experience in the lime and limestone industry. During 2005, he acted as a consultant for various engineering companies, and also as a Project Managerproject manager for a specialty minerals based company. Prior to 2005, Mr. Riggs held various plant and operations management positions with Chemical Lime Company.

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CORPORATE GOVERNANCE
 The Company has
We have adopted corporate governance practices in accordance with the listing standards of The NASDAQ StockGlobal Market and commensurate with its size and stageour size.
Our Board of development.
     The BoardDirectors consists of five directors. TheUpon the recommendation of the Nominating and Corporate Governance Committee, the Board has determined that Messrs. Odishaw, Cardin, Doumet and Irmscher are independent within the meaning of the NASDAQ rules. In making the determination that Mr. Doumet is independent, the Committee and the Board considered the fact that Mr. Doumet is the brother of Mr. George


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M. Doumet, who indirectly owns all of the outstanding shares of Inberdon. The fifth director is Mr. Byrne, the Company’sour President and Chief Executive Officer.
 
The Board meets at least four times each year, and more frequently as required, and is responsible for supervising the management of the business and affairs of the Company,company, including the development of our major policy and strategy. The Board has a standing Executive Committee, Nominating and Corporate Governance Committee, Audit Committee and Compensation Committee.
 
During the year ended December 31, 2005,2006, the Board held six meetings, the Executive Committee held twono meetings, the Audit Committee held eight meetings, the Compensation Committee held two meetings, and the Nominating and Corporate Governance Committee held one meeting. During the year ended December 31, 2005,2006, each director attended at least 75% of the aggregate of (a) the total number of meetings held by the Board and (b) the total number of meetings held by all Committeescommittees on which he served. The Board has a policy encouraging each director to attend the Company’sour annual meeting of shareholders, and all of the Company’sour directors attended the 2005 Annual Meeting.2006 annual meeting. The Board also has a policy that, in conjunction with each regularly scheduled meeting of the Board, the Board’s independent directors will meet in executive session.
 
Governance responsibilities are undertaken by the Board as a whole, with certain specific responsibilities delegated to the four Committeescommittees as described below:
 TheOur Executive Committee is composed of Messrs. Doumet (Chairman), Odishaw and Byrne. Within the policy and strategic direction provided by the Board, the Executive Committee may exercise all of the powers of the Board, except those required by law, regulation or NASDAQ listing standards to be exercised by the full Board, or another Committeecommittee of the Board, and is required to report to the Board on all matters considered and actions taken since the last meeting of the full Board.
 
  TheOur Nominating and Corporate Governance Committee (the “Nominating Committee”) is composed of Messrs. Doumet (Chairman), Cardin, Odishaw and Irmscher, each of whom is an independent director. The primary purposes of the Nominating Committee are to identify and recommend individuals to serve as members of the Board, to recommend to the Board the duties, responsibilities, and members of each Committee,committee, and to assist the Board with other matters to ensure effective corporate governance.governance, including making independence and other determinations related to director qualifications. The Nominating Committee is responsible for establishing the Board’s procedures for consideration of director nominees from shareholders and the Board’s process for shareholder communications with the directors. The Nominating Committee will consider qualified candidates for nomination for election to the Board recommended by the Company’sour directors, officers and shareholders. In considering all such candidates, the Nominating Committee will take into account the candidate’s qualifications and the size, composition and needs of the Board, in the following areas of experience, judgment, expertise, and skills; the Company’s industry;skills: our industries; accounting and finance; business judgment; management; leadership; business strategy; risk management; and corporate governance. All candidates should have a reputation for integrity, have experience in positions with a high degree of responsibility, be leaders in the companies, institutions, or professions with which they have been affiliated, and be capable of making a contribution to the Company.company. Shareholders wishing to recommend a director candidate for consideration by the Nominating Committee should send all relevant information with respect to the individual to the Chairmanchairman of the Committee.Committee in care of our Secretary. Shareholders and other interested persons who wish to contact the directors on other matters should contact the Companyour Secretary. ShareholdersOur Secretary, who may contact the Chairman of the Nominating Committee and the directors in writingbe contacted by mail at the Company’sour corporate address or by e-mailing the Company Secretarye-mail atuslime@uslm.com. The Secretary, forwards shareholder communications to the director(s) as addressed in such

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communication. A copy of theThe Nominating Committee’s Charter,Committee has adopted a written charter, which was adopted by the Board effective March 25, 2004 is available on the Company’sour website located atwww.uslm.com. The Nominating Committee reviews and assesses the adequacy of its charter on an annual basis.
 TheOur Audit Committee is composed of Messrs. Cardin (Chairman), Irmscher and Odishaw. TheUpon recommendation of the Nominating Committee, our Board has determined that each member of the Audit Committee is independent and meets the other qualification standards set by law, regulation and applicable NASDAQ listing standards. Based on his past education, employment experience, and professional certification in public accounting, the Board has determined that Mr. Cardin qualifies as an audit committee financial expert as defined by the Securities and Exchange Commission (the “SEC”).Commission. The Audit Committee is directly


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responsible for the appointment, compensation, retention and oversight of the work of the Company’sour independent registered public accounting firm (“independent auditors”). The Audit Committee is also responsible for overseeing the administration of the Company’sour Code of Business Conduct and Ethics, which is available on the Company’sour website located atwww.uslm.com; reviewing and approving all related-party transactions; and administering the Company’sour procedures for the receipt, retention, and treatment of complaints regarding accounting, internal accounting controlscontrol and auditing matters and for the confidential anonymous submission by our employees of the Company of concerns regarding questionable accounting or auditing matters. Under our Code of Business Conduct and Ethics and our “whistleblower” procedures, proposed transactions with related persons and other transactions, arrangements or relationships involving a director or executive officer that may involve potential conflicts of interest are to be submitted in advance to the Audit Committee for its review and approval, with any involved director or executive officer playing no role in the investigation and consideration of the matter. In considering whether to approve any such related-party transaction, including with Inberdon or Mr. Beall or their affiliates, the Committee would consider whether the transaction was in the best interests of the company and all of its shareholders; whether the same or a similar transaction were available to the company from unrelated third parties on equal or better terms; and whether the terms of the related-party transaction were negotiated at arms’-length and were at least as favorable to the company as any other reasonably available transaction from another party. Advice from independent advisors, including formal fairness opinions, would be sought where appropriate. The Audit Committee has adopted a written charter, which is available on the Company’sour website located atwww.uslm.com. www.uslm.com. The Audit Committee reviews and assesses the adequacy of the charter on an annual basis. The Report of the Audit Committee is set forth below.
  The Compensation Committee is composed of three independent directors, Messrs. Odishaw (Chairman), Irmscher and Doumet. The Compensation Committee is responsible for the evaluation, approval, and administration of salary, incentive compensation, bonuses, benefit plans, and other forms of compensation for the Company’sour officers and directors. The Compensation Committee is responsible for administering the 1992 Planplan and the 2001 Plan.plan. The Report of the Compensation Committee follows the Report of the Audit Committee.is included on page 13.
 Notwithstanding anything to the contrary, the following reports of the Audit Committee and the Compensation Committee and the Performance Graph set forth below shall not be deemed to be incorporated by reference by any general statement incorporating by reference the Proxy Statement into any filing under the Securities Act of 1933 or the Securities Exchange Act of 1934, except to the extent that the Company specifically incorporates this information by reference. This information shall not otherwise be deemed to be filed under such Acts.
REPORT OF THE AUDIT COMMITTEE
The Audit Committee is composed of three independent directors as defined under the applicable rules of The NASDAQ StockGlobal Market, Section 10A(m)(3) of the Securities Exchange Act of 1934, and the rules and regulations of the Securities and Exchange Commission (the “SEC”).Commission. The Committee oversees the Company’scompany’s financial reporting process on behalf of the Board of Directors. The Audit Committee is directly responsible for the appointment, compensation and oversight of the work of the Company’scompany’s independent registered public accounting firm (“independent auditors”). Management has primary responsibility for the Company’scompany’s financial statements and reporting process, including the systems of internal controls.control. Grant Thornton LLP, the Company’scompany’s independent auditors, is responsible for performing an independent audit of the Company’scompany’s financial statements in accordance with standards established by the Public Company Accounting Oversight Board, expressing an opinion, based on its audit, as to the conformity of such financial statements with accounting principles generally accepted in the United States of America.
In the performance of its oversight function, the Audit Committee has reviewed and discussed the audited financial statements with management and the independent auditors. The Audit Committee has discussed with the independent auditors the matters required to be discussed by Statement on Auditing Standards No. 61,Communication with Audit Committees, as amended. In addition, the Audit Committee has received from the independent auditors the written disclosures required by the pronouncements on the Independence Standards Board and discussed with them their independence from the Companycompany and its

6


management. The Audit Committee has considered whether the independent auditors’ provision of non-audit services to the Companycompany is compatible with the auditors’ independence.
The Audit Committee meets with the independent auditors, with and without management present, to discuss the results of their examinations, their evaluations of the Company’scompany’s internal controls, and the overall quality of the Company’scompany’s financial reporting.


6


Based on the reviews and discussions referred to above, the Audit Committee recommended, and the Board of Directors has approved, the inclusion of the Company’scompany’s audited financial statements in the company’s Annual Report onForm 10-K for the year ended December 31, 2005,2006 for filing with the SEC.
Respectfully submitted by the members of the Audit Committee of the Board of Directors,
Richard W. Cardin, Chairman
Wallace G. Irmscher
Edward A. Odishaw
REPORT OF THEEXECUTIVE COMPENSATION COMMITTEE
Compensation Discussion and Analysis
The Compensation Committee of theour Board of Directors (the “Committee”) has the responsibility for administering theour executive compensation program of the Company.program. The Compensation Committee reviews and, as appropriate, makes recommendations to the full Board of Directors regarding the base salaries and annual incentive compensationcash bonuses for executive officers, and administers our 1992 plan and 2001 plan, including the Company’s 1992 Stock Option Plan, as Amendedgrant of stock options and Restated (the “1992 Plan”),shares of restricted stock. Where appropriate, we have also entered into employment agreements with certain executive officers.
Compensation Philosophy and the Company’s 2001 Long-Term Incentive Plan (the “2001 Plan”).
Compensation Policies.TheObjectives.  Our principal executive compensation policy, of the Company, which is endorsed by the Committee, is to provide a compensation program that will attract, motivate and retain persons of high quality and will support a long-standing internal culture of loyalty and dedication to the interests of the Companycompany and itsour shareholders. In administering the executive compensation program, the Committee is mindful of the following principles and guidelines, which are supported by the full Board:
• Base salaries for executive officers should be competitive.
• A sufficient portion of annual compensation should be at risk in order to align the interests of executives with those of our shareholders.
• The variable part of annual compensation should reflect both individual and corporate performance.
• As a person’s level of responsibility increases, a greater portion of total compensation should be at risk and include more stock-based compensation to provide executives long-term incentives and help to align further the interests of executives and shareholders in the enhancement of shareholder value.
Our executive officers’ compensation currently has three primary components: base salary, annual cash bonuses and stock-based awards granted pursuant to our 2001 plan. In addition, executive officers receive certain benefits that are specifically provided for in their employment agreements or are generally available to all salaried employees. We do not have any defined benefit pension plans, nonqualified deferred compensation arrangements or supplemental retirement plans for our executive officers.
For each executive officer, the Committee determines the appropriate level for each compensation component based in part, but not exclusively, on its view of competitive market factors, internal equity and consistency, and other considerations deemed relevant, such as rewarding extraordinary performance. Our Chief Executive Officer provides the Committee with recommendations for executive officers should be competitive. A sufficient portion of annual compensation should be at risk in order to alignother than himself, which the interests of executivesCommittee reviews and approves as submitted or with those of the shareholders of the Company. This variable part of annual compensation should reflect both individual and corporate performance. As a person’s level of responsibility increases, a greater portion of total compensation should be at risk, and the mix of total compensation should be weighted more heavily in favor of stock-based compensation. Stock options, restricted stock, and other stock-based compensation provide executives long-term incentives and help align the interests of executives and shareholders in the enhancement of shareholder value.
As discussed elsewhere in the Proxy Statement, the Company has entered into employment agreements with Messrs. Byrne, Hughes, and Bowers. These agreements provide for an annual base salary, bonuses, the use of a Company car, reimbursement of business expenses, participation in the Company’s 401(k) plan, severance arrangements, and other benefits.revisions, if any. The Committee has determined that such agreements are appropriate means to achieve the Company’s overallnot adopted any formal or informal policies or guidelines for allocating compensation policies.
2005 Compensation.The Company’s executivebetween long-term and currently paid compensation, packages have three separate elements consistingbetween cash and non-cash compensation, or among different forms of base salary, annual incentivenon-cash compensation, and long-term incentive compensation. Thehas not sought to formally benchmark our compensation packagesagainst that of Mr. Byrne and the other executive officers are designed to be competitive within the industry and to provide incentives for both short- and long-term performance in line with the financial interests of the shareholders.our peers.
Base Salaries.The Committee determines levels of the executive officers’ base salaries so as to be competitive with amounts paid to executives performing similar functions in comparable size non-durable manufacturing companies. The amount of each executive’s annual increase in base salary, if any, will beis based on a number of largely subjective factors, including changes in the individual’s duties and responsibilities, the personal performance of such executive


7


performance of such executive officer, the performance of the Company, company,cost-of-living increases, and such other factors as the Committee deems appropriate, including the individual’s overall mix between fixed and variable compensation and between cash and stock-based compensation. Executive officers, other than
Salary increases for Messrs. Byrne, Hughes, Owens and Bowers in 2006 were 3.77%, 3.01%, 4.42% and 2.66%, respectively. Mr. Riggs began work with us in January 2006. Salary increases for Messrs. Byrne, received raisesHughes, Owens, Bowers and Riggs effective in 2005 averaging approximately 2.4%. Mr. Byrne’s 2005 base salary was $265,000, an increase2007 are 5.45%, 2.92%, 3.85%, 1.94% and 2.86%, respectively. In determining these increases, the primary factors considered were increases in thecost-of-living, the officers’ individual performances, the growth of 6% from his 2003 base salary.the company and changes in their duties and responsibilities.
Annual Incentive Compensation.Cash Bonuses.Each of the Company’sour executive officers is eligible to receive annual cash bonus awardsbonuses based on determinations made by the Committee. Except in the case of Mr. Byrne, the Company haswe have not adopted a formal or informal annual bonus plan.plan with preset criteria and targets. Rather, the determination to pay a cash bonus, if any, is made after the year end based on the Committee’s subjective judgment with respect to the past performance of the individual or on the individual’s attainment of objectivenonquantified performance goals.goals during the year. In either such case, the bonus may be based on the specific accomplishments of the individual or on the overall success of the Company. The Committee awardedcompany. In the following bonuses for 2005, which were paidcase of Mr. Byrne, in 2006: Mr. Hughes, $40,000; Mr. Owens, $27,500; Mr. Bowers, $12,000; and Mr. Murray, $40,000.
As described elsewhereaddition to the possibility of a subjective cash bonus in the Proxy Statement,discretion of the Committee, Mr. Byrne’s employment agreement provides for an objective annual cash bonus based on the Company’sour EBITDA (earnings before interest, taxes, depreciation, and amortization) compared to certain EBITDA levels set forth in Mr. Byrne’s employment agreement as well asfor each of 2006, 2007 and 2008 beginning at a bonus of $100,000 if EBITDA is $17,000,000 and increasing $50,000 for each $500,000 increase in EBITDA up to a maximum of the possibilitygreater of a subjective$250,000 or his base salary at December 31 of the year in respect of which the EBITDA Bonus is being paid if EBITDA exceeds $18,500,000. Mr. Byrne’s EBITDA bonus for 2006 is reflected on page 9 in the Summary Compensation Table.
Discretionary cash bonus awards are determined on an annual basis. These bonuses are paid after our earnings for the applicable year are released. Discretionary bonuses paid in 2007 for performance in 2006 are reflected on page 9 in the discretion of the Committee. For 2005, the increase in the Company’s EBITDA resulted in Mr. Byrne’s earning an objective bonus of $250,000, which was paid in 2006. A subjective bonus of $75,000 was alsoSummary Compensation Table. The discretionary bonuses were awarded for 2005 and paid in 2006 based on the Company’s improved operatingsubstantial growth of the company, including increased production and financial results for 2005.sales, the performance of the company and each officer’s individual performance and accomplishments during 2006.
Long-Term Incentive Compensation.
Stock-Based Awards.The Committee also administers theour 1992 Planplan and the 2001 Planplan to provide long-termstock-based incentives to itsour key employees, including executive officers. Grants of stock options, restricted shares of stock, and other possible stock-based compensation are based on each individual’s position within the Company,company, level of responsibility, past performance, and expectation of future performance. Stock optionsIn determining the number of stock-based awards to be granted during 2005 were:to each executive officer, the Committee also considers the number of stock-based awards made in prior years to the executive officer.
Grants of stock-based awards to Mr. Byrne 30,000;are made on the last business day of the calendar year as set forth in his employment agreement. Grants to other executive officers are made on or soon after the date that earnings for the preceding calendar year are released. The Committee also may make grants to executive officers at other times during the year in connection with new hires or promotions. The exercise price for stock options is set at the closing per share market price of our common stock on the date of grant.
Our stock-based compensation policies have been impacted by the implementation of SFAS 123(R). Generally, SFAS 123(R) requires all stock-based payments to employees, including grants of employee stock options and restricted stock, to be expensed based on their fair values over the vesting period. In December 2006, the Committee determined that the amount required to be expensed for stock options was significantly greater than the amount of benefit employees perceived they were receiving, especially in light of the increase in the price of our stock in recent years. Based on a review by the Committee and management of recent trends in executive compensation, the fact that stock options are comparatively more dilutive to earnings than restricted stock, as well as the effects of SFAS 123(R) noted above, the Committee decided to change the stock-based component of our executive officers’ compensation package to be weighted more heavily toward the granting of shares of restricted stock.
Since 2003, Mr. Hughes, 2,000;Byrnes’ employment agreement has provided for the grant to him of 30,000 options on the last business day of each calendar year. On December 30, 2005, the Committee granted Mr. Owens, 4,500;Byrne 30,000 options. In December 2006, the Committee and Mr. Murray, 3,000.Byrne agreed to amend his employment agreement, effective December 29, 2006, to provide for a combination of 7,500 options and 7,500 shares of restricted stock instead of the 30,000


8


options. The Committee determined the ratio of options and shares of restricted stock to be awarded based, in part, on the amount of estimated expense that the company would recognize if the previously required 30,000 options were granted.
Options and, in the case of Mr. Byrne, shares of restricted stock, awarded in 2006 are reflected on page 10 in the Grants of Plan-Based Awards table. In February 2007, the Committee granted shares of restricted stock to the other executive officers as follows:
Shares of
Name
Restricted Stock
Billy R. Hughes500
M. Michael Owens900
Johnney G. Bowers0
Russell W. Riggs1,500
Mr. Byrne’s options that are designated incentive stock options vest one year from the date of grant and his nonqualified options vest immediately. His shares of restricted stock vest in two semi-annual installments. The options and shares of restricted stock granted to the other executive officers in 2006 and to date in 2007, respectively, vest in three annual installments for Messrs. Owens, Bowers and Riggs, and two annual installments for Mr. Hughes.
Tax Implications.Internal Revenue Code of 1986 (“Code”) Section 162(m) generally limits the corporate income tax deduction for compensation paid to certain named executive officers to $1 million per year, except for certain qualified and performance-based compensation. The Committee has not seen any need to adopt a policy with regard to qualifying bonus awards for tax deductibility under Code Section 162(m) since Company. Our cash compensation is welland restricted stock grants are below the level at which this tax limitation would apply, and options that were granted in 1999 and thereafter under the 1992 Plan, as amended and restated in 1999, and that were or will be granted under theour 2001 Planplan are intended to constitute performance-based compensation not subject to the Code Section 162(m) limitation.
COMPENSATION COMMITTEE
Edward A. Odishaw, Chairman
Antoine M. Doumet
Wallace G. Irmscher

8


EXECUTIVE COMPENSATION
Summary Compensation Table
 
The following table sets forth the cash and non-cash compensation for each of the last three fiscal years2006 earned by theour President and Chief Executive Officer, our Chief Financial Officer and the fourour three other executive officers of the Company in 2005:officers:
                     
              Long-Term All Other
  Annual Compensation Compensation Compensation
              Securities  
Name and             Underlying All Other
Principal Position Year Salary Bonus(1) Options (#) Compensation(2)
 
Timothy W. Byrne  2005  $265,000  $300,000   30,000  $34,200 
President and Chief Executive Officer  2004  $250,000  $250,000   30,000  $34,100 
   2003  $250,000  $100,000   30,000  $4,000 
 
Billy R. Hughes  2005  $165,667  $30,000   2,000  $3,399 
Senior Vice President — Sales and Marketing  2004  $161,667  $30,000   5,000  $3,318 
   2003  $157,833  $7,500   10,000  $3,234 
 
M. Michael Owens  2005  $124,208  $18,000   4,500  $2,556 
Vice President and Chief Financial Officer  2004  $120,708  $15,000   4,500  $2,508 
   2003  $117,291  $4,000   12,000  $617 
 
Johnney G. Bowers  2005  $150,025  $8,000     $3,086 
Vice President — Manufacturing  2004  $146,750  $8,000   1,500  $3,009 
   2003  $143,830  $2,000     $2,976 
 
Richard D. Murray  2005  $117,375  $30,000   3,000  $3,305 
Vice President — Texas Lime  2004  $114,792  $30,000   6,000  $2,423 
   2003  $112,291  $5,000   6,000  $2,360 
 
                                     
              Change in
    
              Pension
    
              Value and
    
              Non-
    
            Non-Equity
 Qualified
    
            Incentive
 Deferred
 All
  
        Stock
 Option
 Plan
 Compensation
 Other
  
Name and Principal
   Salary
 Bonus
 Awards
 Awards
 Compensation
 Earnings
 Compensation
 Total
Position
 Year ($) ($)(1) ($)(2) ($)(2) ($)(3) ($) ($)(4) ($)
 
Timothy W. Byrne  2006   275,000   150,000   0   118,810   275,000      38,451   857,261 
President and Chief Executive Officer                                    
Billy R. Hughes  2006   167,114   40,000      16,366         3,370   226,850 
Senior Vice President — Sales and Marketing                                    
M. Michael Owens  2006   129,083   30,000      18,365         4,972   182,420 
Vice President and Chief Financial Officer                                    
Johnney G. Bowers  2006   153,633         3,882         4,159   161,674 
Vice President — Manufacturing                                    
Russell W. Riggs(5)  2006   139,013   40,000      28,210         7,180   216,050 
Vice President — Production                                    


9


(1)Bonuses wereReflects discretionary bonuses earned in the previous year2006 and paid in the year shown.2007.
 
(2)Reflects the dollar amount of expense recognized for financial reporting purposes in 2006 with respect to restricted stock and stock option awards in accordance with FSAS 123(R) and thus, in the case of option awards, includes amounts from awards granted in and prior to 2006. The method and assumptions used to determine the amount of expense recognized for options is set forth in Note 7 to our consolidated financial statements included in our annual report onForm 10-K.
 
Company(3)Reflects Mr. Byrne’s EBITDA bonus earned in 2006 and paid in 2007.
(4)Includes company contributions to the Company’s 401(k) plan, the value attributable to personal use of company-provided automobiles as included as compensation on each executive officer’sW-2 and, for Mr. Byrne, a $30,000 payment in lieu of the Company’sour obligation to fund a life insurance or retirement arrangement.
(5)Mr. Riggs began work with us in January 2006.
Option Grants in Last Fiscal Yearof Plan-Based Awards
 
The following table sets forth information with respect to restricted stock and stock option awards granted to the named executive officers during 2006:
                                             
                All Other
 All Other
    
                Stock
 Option
    
                Awards:
 Awards:
 Exercise
 Grant
    Estimated Possible Payouts
 Estimated Future Payouts
 Number
 Number of
 or Base
 Date Fair
    Under Non-Equity Incentive
 Under Equity Incentive
 of Shares
 Securities
 Price of
 Value of
    Plan Awards Plan Awards of Stock
 Underlying
 Option
 Stock and
  Grant
 Threshold
 Target
 Maximum
 Threshold
 Target
 Maximum
 or Units
 Options
 Awards
 Option
Name
 Date ($) ($) ($) (#) (#) (#) (#) (#) ($/Sh) Awards($)
 
Timothy W.      100,000      275,000                             
Byrne  12/29/06                     7,500         226,125 
   12/29/06                        7,500   30.15   79,725 
Billy R. Hughes  2/2/06                        2,000   27.98   24,620 
M. Michael Owens  2/2/06                        3,000   27.98   36,930 
Johnney G. Bowers  2/2/06                        1,000   27.98   12,310 
Russell W. Riggs  2/2/06                        7,500   27.98   92,325 
Option Exercises and Stock Vested
The following table sets forth information with respect to stock options granted to the namedoption awards exercised by, and stock awards vested for, executive officers during 20052006:
                 
  Option Awards Stock Awards
  Number of Shares
 Value Realized on
 Number of Shares
 Value Realized on
Name
 Acquired on Exercise (#) Exercise ($) Acquired on Vesting (#) Vesting ($)
 
Timothy W. Byrne  40,000   1,157,900       
Billy R. Hughes            
M. Michael Owens  6,000   182,280       
Johnney G. Bowers  5,000   141,850       
Russell W. Riggs            


10


Outstanding Equity Awards at Fiscal Year-End
The following table includes certain information with respect to the value of all unexercised options and the potential realizable value at assumed annual ratesunvested shares of restricted stock price appreciation over the ten-year termas of the options:December 31, 2006:
                         
                  Potential Realizable Value at
                  Assumed Annual Rates of Stock
  Individual Grants         Price Appreciation for Option Term
  Number of % of Total        
  Securities Options        
  Underlying Granted to Exercise      
  Options Granted Employees in Price Expiration 5% 10%
Name (#) Fiscal Year ($/Sh) Date ($) ($)
 
Timothy W. Byrne  30,000 (1)  38.7   26.47   12/30/15   499,500   1,265,700 
Billy R. Hughes  2,000 (2)  2.6   13.16   2/03/15   16,560   41,940 
M. Michael Owens  4,500 (3)  5.8   13.16   2/03/15   37,260   94,365 
Richard Murray  3,000 (3)  3.9   13.16   2/03/15   24,840   62,910 
 
                                     
  Option Awards  Stock Awards 
                          Equity
 
                       Equity
  Incentive
 
                       Incentive
  Plan
 
                       Plan
  Awards:
 
        Equity
              Awards:
  Market or
 
        Incentive
              Number
  Payout
 
        Plan
        Number
     of
  Value of
 
        Awards:
        of
  Market
  Unearned
  Unearned
 
        Number
        Shares
  Value of
  Shares,
  Shares,
 
  Number of
  Number of
  of
        or Units
  Shares or
  Units or
  Units or
 
  Securities
  Securities
  Securities
        of Stock
  Units of
  Other
  Other
 
  Underlying
  Underlying
  Underlying
        That
  Stock
  Rights
  Rights
 
  Unexercised
  Unexercised
  Unexercised
  Option
     Have
  That Have
  That
  That Have
 
  Options
  Options
  Unearned
  Exercise
  Option
  Not
  Not
  Have Not
  Not
 
  (#)  (#)  Options
  Price
  Expiration
  Vested
  Vested
  Vested
  Vested
 
Name
 Exercisable  Unexercisable  (#)  ($)  Date  (#)  ($)  (#)  ($) 
 
Timothy W. Byrne  20,000         11.35   12/31/14   7,500(6)  226,125       
   30,000          26.47   12/30/15                 
   7,500          30.15   12/29/16                 
Billy R. Hughes  12,000         7.00   2/20/08             
   10,000          8.00   11/17/09                 
   5,000          8.56   1/30/14                 
   1,000   1,000(1)      13.16   2/3/15                 
      2,000(2)      27.98   2/2/16                 
M. Michael Owens  3,000   1,500(3)     8.56   1/30/14             
   1,500   3,000(4)      13.16   2/3/15                 
      3,000(5)      27.98   2/2/16                 
Johnney G. Bowers  3,000         7.00   2/20/08             
   10,000          8.00   11/17/09                 
   1,000   500(3)      8.56   1/30/14                 
      1,000(5)      27.98   2/2/16                 
Russell W. Riggs     7,500(5)     27.98   2/2/16             
(1)Of the 30,000These options 26,223 vested immediately upon grant, and 3,777 vest on December 30, 2006.
(2)One-half of the options vest on each of February 3, 2006 and February 3, 2007.
 
(3)(2)These options vested 50% on February 2, 2007 and will vest 50% on February 2, 2008.
 
One-third of the(3)These options vested on January 30, 2007.
(4)These options vested 50% on February 3, 2007 and will vest 50% on February 3, 2008.
(5)These options vested 331/3% on February 2, 2007 and will vest 331/3% on each of February 3, 2006,2, 2008 and February 3,2, 2009.
(6)These shares of restricted stock will vest 50% on June 29, 2007 and February 3, 2008.50% on December 29, 2007.

9
11


Aggregated Option Exercises in Last Fiscal Year and Year-End Option ValuesEquity Compensation Plan Information
 
The following table sets forth information with respect to stock options exercised by the named executive officers during 2005 and the number and value of unexercised options held by such executive officers at year end:
                         
  Shares Value Number of Securities Value of Unexercised
  Acquired on Realized Underlying Unexercised Options In-the-Money Options
Name Exercise (#) ($)(1) at Year-End (#) at Year-End ($)(2)
          Exercisable Unexercisable Exercisable Unexercisable
Timothy W. Byrne  50,000   703,000   86,223   3,777   1,149,900   0 
Billy R. Hughes  25,000   348,950   24,500   4,500   463,115   71,395 
M. Michael Owens  6,000   67,200   3,500   11,500   117,345   158,865 
Johnney G. Bowers  4,000   39,200   18,500   1,000   349,415   17,910 
Richard D. Murray  20,000   287,783   24,500   9,000   369,410   156,810 
(1)Market value of underlying securities on the date of exercise minus the exercise price.
(2)Market value of underlying securities on December 31, 2005 minus the exercise price.
Equity Compensation Plan Information
     The following table sets forth information with respect to the Company’sour equity compensation plans as of December 31, 2005:
             
          Number of Shares
  Number of Shares to be Issued Weighted Average Exercise Remaining
  Upon Exercise of Outstanding Price of Outstanding Available for
Plan Category Options, Warrants and Rights Options, Warrants and Rights Future Issuance
             
Equity compensation plans approved by security holders  278,200  $11.97   140,500 
Equity compensation plans not approved by security holders         
   
Total  278,200  $11.97   140,500 
Executive Employment and Termination Agreements2006:
 The Company has
             
      Number of Shares
  Number of Shares to be Issued
 Weighted Average Exercise
 Remaining
  Upon Exercise of Outstanding
 Price of Outstanding Options,
 Available for
Plan Category
 Options, Warrants and Rights Warrants and Rights Future Issuance
 
Equity compensation plans approved by security holders  234,117  $14.62   97,750 
Equity compensation plans not approved by security holders         
             
Total  234,117  $14.62   97,750 
Employment Agreements
We have employment agreements with Messrs. Byrne, Hughes, and Bowers. Such employment agreements are designed to ensure that the Company will be able to attract, motivate, and retain highly qualified talent, which is critical to both the short- and long-term success of the Company.
The employment agreements provide for a base salary to be reviewed annually. Mr. Byrne’s amended and restated employment agreement, dated as of May 2, 2003, as further amended on December 29, 2006, provides him with an annual base salary of at least $250,000. In addition toThe agreements for Messrs. Hughes and Bowers provide each of them with an annual base salary theof at least $80,000 and $130,000, respectively. The agreements for Messrs. Byrne, Hughes and Bowers also provide for a discretionary bonus to be determined by the Compensation Committee of the Board of Directors.Committee. In addition to the possibility of a discretionary bonus, Mr. Byrne is eligible to receive an objective bonus based on the Company’sour earnings before interest, taxes, depreciation, and amortization (“EBITDA”)(EBITDA) compared to certain levels set forth in his employment agreement, as discussed above. Mr. Byrne’s employment agreement. Mr. Byrne isagreement also entitled toprovides for grants of 7,500 options and 7,500 shares of restricted stock on the last business day of each year, an annual $30,000 contribution to fund a life insurance or retirement arrangement and a country club membership. InThe agreements also provide for use of a company car, reimbursement of business expenses, participation in the company’s 401(k) plan and other benefit programs on the same basis as other salaried employees.
As set forth in the table below, in the event of a change of control of the Company, and Mr. Byrne’s termination,company, Mr. Byrne is entitled to severance payments equal to two times his then-current annual base salary, benefits and bonuses for at least one and a halfif he voluntarily terminates his employment within nine months following the change of control or we terminate his employment without cause within two years depending on the reason for and date of his termination in relation tofollowing the change of control. Mr. Byrne is entitled to severance payments equal to his then-current annual base salary, benefits and bonuses for one and a half yearsyear if he is terminated without cause.cause other than following a change of control. Unless he provides us with three months’ notice, Mr. Byrne is not entitled to any severance payments upon his voluntary termination; if he does provide us with such notice, he is entitled to severance equal to two months’ base salary. In the case of Mr. Bowers, his severance payment would be six months’ compensation. Mr. Hughes does not have a severance arrangement, but is generally entitled to one-year’sone year’s notice before termination. Mr. Byrne’s and Mr. Hughes’ agreements contain certain post-termination covenants not to compete.

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compete. The employment agreements also provide for use of a Company car, reimbursement of business expenses, participation in the Company’s 401(k) plan and other benefit programs on the same basis as other salaried employees. Mr. Hughes’ and Mr. Bowers’ agreements have no expiration dates. Mr. Byrne’s agreement expires on December 31, 2008, and is thereafter renewable for successive one-year periods, unless the agreement is terminated earlier by him or the Company.us. Pursuant to Mr. Byrne’s employment agreement, the Companywe have agreed to use itsour best efforts to cause Mr. Byrne to remain on the Board and to be appointed a member of the Executive Committee of the Board.
Potential Payments Upon Termination or Change of Control
Regardless of the manner in which an executive officer’s employment terminates, including upon death, disability or termination for cause, he is entitled to receive amounts earned during his term of employment. Such amounts include:
• salary through the date of termination;
• stock-based compensation in which he has vested; and
• unused vacation pay.


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In addition, Mr. Byrne may be entitled to a proportional EBITDA bonus for the year of termination if termination occurs in the second half of the year.
The following table summarizes the estimated severance payments to be made under each employment agreement, plan or arrangement which provides for payments to an executive officer at, following or in connection with a termination of employment due to voluntary resignation, involuntary termination not for cause, death or disability or change in control:
                 
     Involuntary
       
  Voluntary
  Termination
       
  Termination
  without
     Termination
 
  without Change
  Change in
  Death or
  with Change in
 
  in Control
  Control
  Disability
  Control
 
Employee
 ($)  ($)  ($)  ($) 
 
Timothy W. Byrne
                
Severance(1)  (2)  700,000      1,400,000 
Accelerated Vesting of Stock-Based Awards(3)        226,125   226,125 
Billy R. Hughes
                
Severance(1)     171,000      171,000 
Accelerated Vesting of Stock-Based Awards(3)            
M. Michael Owens
                
Severance(1)            
Accelerated Vesting of Stock-Based Awards(3)            
Johnney G. Bowers
                
Severance(1)     77,150      77,150 
Accelerated Vesting of Stock-Based Awards(3)            
Russell W. Riggs
                
Severance(1)            
Accelerated Vesting of Stock-Based Awards(3)            
(1)The estimated severance payments are based on base salaries at December 31, 2006 and, in the case of Mr. Byrne, his total cash bonus received for 2006. Does not include, in the case of Mr. Byrne, any proportional EBITDA bonus to which he may be entitled for the year of termination if termination occurs in the second half of the year.
(2)Does not include severance payment of two months’ base salary which Mr. Byrne would be entitled to if he gave us three months’ notice.
(3)The estimated value of accelerated vesting of stock-based awards is based on the nonvested options and shares of restricted stock held by each executive officer on December 31, 2006 and the closing per share market price of our common stock on that date.
REPORT OF COMPENSATION COMMITTEE
The Compensation Committee has reviewed and discussed with management the Compensation Discussion and Analysis included in this proxy statement. Based on such review and discussion, the Compensation Committee recommended to the Board of Directors that the Compensation Discussion and Analysis be included in the proxy statement.
Compensation of DirectorsCommittee
 
Edward A. Odishaw. Chairman
Antoine M. Doumet
Wallace G. Irmscher


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DIRECTOR COMPENSATION
We use a combination of cash and stock-based awards to attract and retain qualified candidates to serve on our Board. In setting director compensation, we consider the significant amount of time that our directors expend in fulfilling their duties, as well as the skill-level required by us for members of our Board.
The following table sets forth the annual compensation for Company directors who are not also employees:
        
Annual Retainer $15,000  $15,000 
Daily Meeting Fee 1,000  $1,000 
Telephonic Meeting Fee 500  $500 
Additional Annual Retainers:     
Audit Committee Chairman 12,000  $12,000 
Compensation Committee Chairman 5,000  $5,000 
 
Non-employee directors of the Company are also granted 2,000 stock options annually under our 2001 plan on the Company’s 2001 Plan. During 2005, each non-employee director wasdate of our annual meeting of shareholders. The options are granted a ten-year stock option exercisable immediately for 2,000 shares at an exercisethe closing per share market price of $13.31 per share.
Section 16(a) Beneficial Ownership Reporting Complianceour common stock on the date of grant and vest immediately.
 On June 10,
The following table summarizes the compensation paid to non-employee directors during 2006:
                             
              Change in
       
              Pension Value
       
              and
       
  Fees
           Nonqualified
       
  Earned
        Non-Equity
  Deferred
       
  or Paid
  Stock
  Option
  Incentive Plan
  Compensation
  All Other
    
  in Cash
  Awards
  Awards(1)
  Compensation
  Earnings
  Compensation
  Total
 
Name
 ($)  ($)  ($)  ($)  ($)  ($)  ($) 
 
Richard W. Cardin  42,000      30,980            72,980 
Antoine M. Doumet  27,500      30,980            58,480 
Wallace G. Irmscher  36,550      30,980            67,530 
Edward A. Odishaw  35,000      30,980            65,980 
(1)Reflects the dollar amount recognized for financial reporting purposes for 2006 in accordance with FSAS 123(R), which equates to the fair value of the immediately vested option awards on the date of grant. The method and assumptions used to determine the amount of expense recognized for options is set forth in Note 7 to our consolidated financial statements. As of December 31, 2006, each director had the following number of options outstanding: Mr. Cardin, 2,000; Mr. Doumet, 8,000; Mr. Irmscher, 2,000; and Mr. Odishaw, 4,000.
INDEPENDENT AUDITORS
Fees for professional services provided by our independent auditors, Grant Thornton LLP, for 2006 and from May 31, 2005 Mr. Odishaw filed a Form 4, which was late, reporting that on May 3, 6 and 9,through December 31, 2005, he had sold a total of 5,900 sharesin each of the Company’s Common Stock.following categories, were as follows:
         
  2006  2005 
 
Audit $204,847  $209,000 
Audit-Related  20,489   16,500 
Tax      
         
Total $225,336  $225,500 
Audit Fees.  Fees for audit services include fees associated with our annual audits, the reviews of our quarterly reports onForm 10-Q, and in the 2005 period, audit services related to the acquisition of U.S. Lime Company — St. Clair.
Audit-Related Fees.  Audit-related fees principally include fees relating to an employee benefit plan audit and accounting consultations.

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PERFORMANCE GRAPH
     The graph below compares the cumulative five-year total shareholders’ return on the Company’s Common Stock with the cumulative total return on The NASDAQ Stock Market Index and a peer group consisting of Oglebay Norton Company (through December 31, 2003), Florida Rock Industries, Lafarge North America, Inc., and Martin Marietta Materials, Inc. The graph assumes that the value of the investment in the Company’s Common Stock and each index was $100 on December 31, 2000, and that all dividends have been reinvested.
COMPARE FIVE-YEAR CUMULATIVE TOTAL RETURN
AMONG U.S. LIME & MINERALS, INC.,
NASDAQ MARKET INDEX AND PEER GROUP INDEX
(LINE GRAPH)
ASSUMES $100 INVESTED ON DECEMBER 31, 2000
ASSUMES DIVIDENDS REINVESTED THROUGH
FISCAL YEAR ENDED DECEMBER 31, 2005
                         
  2000 2001 2002 2003 2004 2005
U.S. LIME & MINERALS, INC. $100.00   115.24   77.13   142.69   239.92   559.54 
PEER GROUP INDEX $100.00   135.11   112.36   155.78   208.57   258.92 
NASDAQ MARKET INDEX $100.00   79.71   55.60   83.60   90.63   92.62 

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INDEPENDENT AUDITORS
Change in Independent Auditors
     On May 31, 2005, the Company dismissed Ernst & Young LLP (“Ernst”) as the independent auditors of the Company. The reports of Ernst on the financial statements of the Company for each of the past two fiscal years ended December 31, 2004 and 2003 contained no adverse opinion or disclaimer of opinion and were not qualified or modified as to uncertainty, audit scope, or accounting principles. The decision to change independent auditors was made by the Audit Committee of the Company’s Board of Directors.
     During the Company’s two then most recent fiscal years and the subsequent interim period from January 1 to May 31, 2005, the Company had no disagreements with Ernst on any matter of accounting principles or practices, financial statement disclosure, or auditing scope or procedure, which if not resolved to the satisfaction of Ernst would have caused them to make reference to the matter in their report. During such period, the Company had no reportable events (as that term is described in Item 304 (a)(1)(v) of SEC Regulation S-K).
     Effective May 31, 2005, the Audit Committee engagedTax Fees.  Grant Thornton LLP (“Grant”) to audit and report on the financial statements of the Company for the fiscal year ended December 31, 2005 and to perform a review of the Company’s interim financial information for the 2005 second and third quarters. Prior to the engagement of Grant, the Company haddid not consulted with them during its two then most recent fiscal years ended December 31, 2004 and 2003, and the subsequent interim period from January 1 to May 31, 2005, onprovide any matter regarding: (a) either the application of accounting principles to a specified transaction, either completedtax services in 2006 or proposed, or the type of audit opinion that might be rendered on the Company’s financial statements or (b) any matter that was the subject of either a disagreement or a reportable event as described above.2005.
 The Company has provided each of Grant and Ernst with a copy of the foregoing disclosures and given each of them the opportunity to provide a statement to be included in this Proxy Statement if they believe that the disclosures are incorrect or incomplete. Neither firm has expressed any disagreement with the disclosures.
Representatives of Grant Thornton are expected to be present at the Annual Meetingannual meeting and will have an opportunity to make a statement if they so desire and be available to respond to appropriate questions.
Fees for Independent Auditors
     Fees for professional services provided by the Company’s independent auditors, Grant, from May 31, 2005 through December 31, 2005, in each of the following categories, are:
     
Audit $209,000 
Audit-Related  16,500 
Tax   
     
Total $225,500 
Audit Fees.Fees for audit services include fees associated with the 2005 annual audit, the reviews of the Company’s quarterly reports on Form 10-Q, and audit services related to the acquisition of U.S. Lime Company — St. Clair.
Audit-Related Fees. Audit-related fees principally include fees relating to an employee benefit plan audit and accounting consultations.
Tax Fees.Grant did not provide any tax services in 2005.
The Audit Committee has adopted a pre-approval policy relating to the providing of services by the Company’sour independent auditors. Under the Committee’s pre-approval procedures, all services to be provided by the auditors must be approved in advance by the Committee. The Committee has delegated to the Chairmanchairman of the Committee the authority to approve such services up to $25,000 each in the case of either a change in the scope or cost of previously approved services, or an additional type of services that

13


was not covered by a prior Committee approval. The Audit Committee does not delegate any of its approval authority to management.
OTHER MATTERS
 
The Board does not intend to present any other matters at the Annual Meetingannual meeting and knows of no other matters that will be presented. However, if any other matters properly come before the Annual Meeting,meeting, the persons designated as proxies on the enclosed Proxy Cardproxy card intend to vote thereon in accordance with their best judgment.
SHAREHOLDER PROPOSALS
 
Shareholder proposals submitted to the Companyus under SECRule 14a-8 under the Securities Exchange Act of 1934 for inclusion in the Company’sour proxy statement for its 2007our 2008 Annual Meeting of Shareholders must be received by the Companyus at itsour office in Dallas, Texas, addressed to Timothy W. Byrne, President and Chief Executive Officer, of the Company, not later than December 8, 2006.2007. SuchRule 14a-8 shareholder proposals must comply with SEC rules.
 The Company
We must receive notice of other matters, includingnon-Rule 14a-8 proposals, that shareholders may wish to raise at the 20072008 Annual Meeting of Shareholders by February 21, 2007.2008. If the Company doeswe do not receive timely notice of such other matters, the persons designated as proxies for such meeting will retain general discretionary authority to vote on such matters under SEC rules. Such notices should also be addressed to Timothy W. Byrne, President and Chief Executive Officer of the Company.Mr. Byrne.
 
The costs of solicitation of Proxiesproxies for the Annual Meetingour annual meeting will be borne by the Company.us. Solicitation may be made by mail, personal interview, telephone,and/or facsimile by our officers and regular employees of the Company who will receive no additional compensation therefor. The Companycompensation. We may specifically engage a firm to aid in theour solicitation of Proxies,proxies, for which services the Companywe would anticipate paying a standard reasonable fee plusout-of-pocket expenses. The CompanyWe will bear the reasonable expenses incurred by banks, brokerage firms, and other custodians, nominees, and fiduciaries in forwarding proxy materials to our beneficial owners.
UNITED STATES LIME & MINERALS, INC.
-s- Timothy W. Byrne
Timothy W. Byrne
Dallas, TexasPresident and Chief Executive Officer
April 7, 2006
UNITED STATES LIME & MINERALS, INC.
-s- Timothy W. Byrne
Timothy W. Byrne
President and Chief Executive Officer
Dallas, Texas
April 6, 2007

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(BAR CODE)                                 +
United States Lime & Minerals, Inc.
       
   000004000000000.000 ext
000000000.000 ext
000000000.000 ext
(BAR CODE) 
MR A SAMPLE
DESIGNATION (IF ANY)
ADD 1
ADD 2
ADD 3
ADD 4
ADD 5
ADD 6
(SCALE)


Least Address Line
000000000.000 ext
000000000.000 ext
000000000.000 ext
000000000.000 ext




C 1234567890    J N T
 
    (BAR CODE)

    o Mark this box with an X if you have made
changes to your name or address details above.


Annual Meeting Proxy Card

 A  Election of Directors
1. The Board of Directors recommends a vote FOR the listed nominees.
        
For
All
 Withhold
All
 For All
Except
 
01-T. W. Byrne,02-R. W. Cardin,
 o o o 
 
03-A. M. Doumet,04-W. G. Irmscher,
 
 
05-E.A. Odishaw
 






(Except nominee(s) written above.)


In their discretion, the proxies are authorized to vote
upon such other business as may properly be brought
before the Annual Meeting or any adjournment thereof.




 B  Authorized Signatures - Sign Here - This section must be completed for your instructions to be executed.
The undersigned acknowledges receipt of the Notice of Annual Meeting of Shareholders and of the Proxy Statement.
Please sign exactly as name appears. Joint owners should each sign personally. Where applicable, indicate your official position or representative capacity.
     
Signature 1 - Please keep signature within the box Signature 2 - Please keep signature within the box Date (mm/dd/yyyy)
 
    /     /
         
n 0  0  7  8  8  0 1 U P X C O Y +

 


 
Proxy - United States Lime & Minerals, Inc.
 

Proxy Solicited on Behalf of the Board of Directors

The undersigned hereby appoints Edward A. OdishawAntoine M. Doumet and Timothy W. Byrne, and either of them, proxies, with power of substitution in each, and hereby authorizes them to represent and to vote, as designated below, all shares of Common Stock of UNITED STATES LIME & MINERALS, INC. standing in the name of the undersigned on March 24, 2006,23, 2007, at the Annual Meeting of Shareholders to be held on May 5, 2006,4, 2007, at the Crowne Plaza Suites, 7800 Alpha Road, Dallas, Texas 75240, and at any adjournment thereof, and especially to vote on the item of business specified below, as more fully described in the Notice of the Meeting dated April 7, 2006,6, 2007, and the Proxy Statement accompanying the same, the receipt of which is hereby acknowledged.

You are encouraged to record your vote on the following items of business to be brought before the Annual Meeting, but you need not mark any box if you wish to vote in accordance with the Board of Directors’ recommendation. The proxies cannot vote your shares unless you sign, date, and return this Proxy Card. Remember, you can revoke this Proxy Card and vote in person by attending the Annual Meeting, or by submitting to the Company prior to the Annual Meeting, a written notice of revocation.

YOUR VOTE IS IMPORTANT! PLEASE MARK, SIGN, AND DATE THIS PROXY CARD AND RETURN IT PROMPTLY IN THE ACCOMPANYING ENVELOPE.

(Continued and to be signed on reverse side.)