Cloud Peak Energy Inc

Cloud Peak Energy Inc

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  Coal sales investigated by feds; no violations yet

  The U.S. Department of Interior is investigating whether mining companies are skirting royalty rules as they increase exports of coal to Asia, federal ... 

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  Senators ask if coal exports skirt royalties

  Lawmakers asked the U.S. Department of Interior on Friday to review whether companies are shortchanging federal and state governments out of millions ...