betfred games-free to play_of 2002, that, to such

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report betfred sportsbook reviewof Cliffs Natural Resources Inc. (the “Company”) on Form 10-K for the period ended December 31, 2013 as filed with the Securities and Exchange Commission on betfred gamesthe date hereof (the “Form 10-K”), I, Gary B. Halverson, President and Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. Section betfred games1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to such officer’s knowledge:

The Form 10-K fully complies with the requirements betfred sportsbookof Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m or 78o(d)); and

The information contained in the Form 10-K fairly presents, in all material respects, betfred sportsbook reviewthe financial condition and results of operations of the Company as of the dates and for the periods expressed in the Form 10-K.



Date:	February 14, 2014

	By:	/s/ Gary B. Halverson
		Gary B. Halverson
		President and Chief Executive Officer