QuickLinks -- Click here to rapidly navigate through this document
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We hereby consent to the incorporation by reference in this Registration Statement on Form S-3 of our report dated February 13, 2014 relating to the financial statements, which appears in Cloud Peak Energy Resources LLC's Annual Report on Form 10-K for the year ended December 31, 2013. We also consent to the reference to us under the heading "Experts" in such Registration Statement.
/s/ PricewaterhouseCoopers LLP
Denver, CO
October 6, 2014
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM