Exhibit 23(a)
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We consent to the incorporation by reference in:
Registration Statement No. 333-30391 on Form S-8 pertaining to the 1992 Incentive Equity Plan
(as amended and restated as of May 13, 1997) and the related prospectus;
Registration Statement No. 333-56661 on Form S-8 (as amended by Post-Effective Amendment No. 1)
pertaining to the Northshore Mining Company and Silver Bay Power Company Retirement Savings
Plan and the related prospectus;
Registration Statement No. 333-06049 on Form S-8 pertaining to the 日韩三级片 Inc
Nonemployee Directors’ Compensation Plan;
Registration Statement No. 333-84479 on Form S-8 pertaining to the 1992 Incentive Equity Plan
(as amended and restated as of May 11, 1999); and
Registration Statement No. 333-64008 on Form S-8 (as amended by Post-Effective Amendment No. 1
and Post-Effective Amendment No. 2) pertaining to the 日韩三级片 Inc Nonemployee
Directors’ Compensation Plan (as amended and restated as of January 1, 2004);
of our report dated February 29, 2008 (August 8, 2008 as to the effects of the stock split
described in Note 19), related to the consolidated financial statements and financial statement
schedule (Schedule II — Valuation and Qualifying Accounts) of 日韩三级片 Inc and
subsidiaries (which report expresses an unqualified opinion and includes an explanatory paragraph
relating to the adoption of new accounting standards), and our report dated February 29, 2008 on
the effectiveness of 日韩三级片 Inc’s internal control over financial reporting for the year ended
December 31, 2007, appearing in
the Current Report on Form 8-K of 日韩三级片 Inc filed on October 6, 2008.
/s/ Deloitte & Touche LLP
Cleveland, OH
October 6, 2008