Form 3400-12 April 2007) UNITED STATES DEPARTMENT OF THE INTERIOR BUREAU OF LAND MANAGEMENT COAL LEASE FORM APPROVED OMB NO. 1004-0073 Expires: March 31, 2010 Serial Number WYW154432Coal Lease • August 12th, 2009 • Cloud Peak Energy Inc. • Bituminous coal & lignite surface mining
Contract Type FiledAugust 12th, 2009 Company Industry
Form 3400-12 (August 2002) UNITED STATES DEPARTMENT OF THE INTERIOR BUREAU OF LAND MANAGEMENT COAL LEASE FORM APPROVED OMB NO. 1004-0073 Expires: December 31, 2003 Serial Number WYW151643Coal Lease • August 12th, 2009 • Cloud Peak Energy Inc. • Bituminous coal & lignite surface mining
Contract Type FiledAugust 12th, 2009 Company Industry
QuickLinks -- Click here to rapidly navigate through this documentCoal Lease • August 8th, 2008 • Cloud Peak Energy Inc.
Contract Type FiledAugust 8th, 2008 CompanyForm 3400-12 (August 2002) UNITED STATES DEPARTMENT OF THE INTERIOR BUREAU OF LAND MANAGEMENT COAL LEASE FORM APPROVED OMB NO. 1004-0073 Expires: December 31, 2003 Serial Number WYW151643