Exhibit 23(b)
Consent of Independent Registered Public Accounting Firm
The Board of Directors and Stockholders
Alpha Natural Resources, Inc.:
We consent to the incorporation by reference in this registration statement on Form S-4 of
Cleveland-Cliffs Inc. of our reports dated February 29, 2008, with respect to the consolidated
balance sheets of Alpha Natural Resources, Inc. as of December 31, 2007 and 2006, and the related
consolidated statements of income, stockholders equity and partners capital and comprehensive
income, and cash flows for each of the years in the three-year period ended December 31, 2007, and
the effectiveness of internal control over financial reporting as of December 31, 2007, which
reports appear in the December 31, 2007 annual report on Form 10-K of Alpha Natural Resources, Inc.
and to the reference to our firm under the heading Experts in the prospectus. Our report on the
consolidated financial statements refers to Alpha Natural Resources, Inc.s change in method of
accounting and reporting for share-based payments, its method of accounting for postretirement
benefits and its method of quantifying errors in 2006.
/s/ KPMG
LLP
Roanoke, Virginia
August 12, 2008