At December 31, 2011, we operated seven active mines at seven mining complexes located in the United States. We have two reportable business segments, which are based on the low-sulfur coal producing regions in the United States in which we operate — the Powder River Basin and the Western Bituminous region. These geographically distinct areas are characterized by geology, coal transportation routes to consumers, regulatory environments and coal quality. These regional similarities have caused market and contract pricing environments to develop by coal region and form the basis for the segmentation of our operations. We incorporate by reference the information about the operating results of each of our segments for the years ended December 31, 2011, 2010 and 2009 contained in Note 15 — Segment Information to our consolidated financial statements beginning on page F-17.
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424B3
Prospectus supplement
28 Aug 13
EFFECT
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27 Aug 13
S-4
Registration of securities issued in business combination transactions
16 Aug 13
UPLOAD
Letter from SEC
14 Jun 12
CORRESP
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24 May 12
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2012 Q1
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15 May 12
UPLOAD
Letter from SEC
14 May 12
10-K
2011 FY
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30 Mar 12
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2011 Q3
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14 Nov 11
10-Q
2011 Q2
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15 Aug 11
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