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Exhibit 23.3

October 7, 2011

Consent of John T. Boyd Company

        We hereby consent to the incorporation by reference in this Registration Statement on Form S-3 by Cloud Peak Energy Inc. (the "Company") and Cloud Peak Energy Resources LLC ("CPER"), of information contained in our report dated January 21, 2011, addressed to the Company, relating to certain coal reserves and resources information for the Company's Powder River Basin properties including setting forth the estimates of the Company's coal reserves in the Company's and CPER's respective Annual Reports on Form 10-K for the year ended December 31, 2010. We also consent to the reference to John T. Boyd Company in the filing and any amendments thereto.

JOHN T. BOYD COMPANY

/s/ RONALD L. LEWIS
Ronald L. Lewis
Managing Director and COO

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Exhibit 23.3

Consent of John T. Boyd Company