320 filings
Page 7 of 16
UPLOAD
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13 Apr 12
Letter from SEC
12:00am
CORRESP
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5 Apr 12
Correspondence with SEC
12:00am
UPLOAD
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23 Mar 12
Letter from SEC
12:00am
8-K
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23 Feb 12
Results of Operations and Financial Condition
12:00am
8-K
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7 Dec 11
Other Events
12:00am
8-K
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7 Nov 11
Results of Operations and Financial Condition
12:00am
8-K
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23 Sep 11
Clean Air Project Progress Report – Operational Testing to Begin
12:00am
8-K
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16 Sep 11
Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant
12:00am
424B5
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7 Sep 11
Prospectus supplement for primary offering
12:00am
424B3
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6 Sep 11
Prospectus supplement
12:00am
FWP
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6 Sep 11
Free writing prospectus
12:00am
8-K
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2 Aug 11
Results of Operations and Financial Condition
12:00am
8-K
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2 Jun 11
Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant
12:00am
424B5
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20 May 11
Prospectus supplement for primary offering
12:00am
FWP
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19 May 11
Free writing prospectus
12:00am
424B3
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19 May 11
Prospectus supplement
12:00am
POSASR
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16 May 11
Automatic shelf registration (post-effective amendment)
12:00am