Exhibit 12.1

Computation of Ratio of Earnings to Combined Fixed Charges and Preference Dividends

	Year Ended December 31,
	2013			2012			2011			2010			2009
Income (loss) from continuing operations excluding income or loss from equity investments	$	(1,089,023	)	$	(1,102,837	)	$	52,824		$	125,598		$	(37,693	)
Adjustments:
Fixed charges	450,743			367,238			294,484			152,730			117,345
Distributed income from equity investments	13,536			5,342			19,360			9,917			5,164
Capitalized interest, net of amortization	(13,518		)	19,163			2,113			4,417			3,143
Arch Western Resources, LLC dividends on preferred membership interest	—			(72		)	(91		)	(107		)	(58		)
Total loss	$	(638,262	)	$	(711,166	)	$	368,690		$	292,555		$	87,901
Fixed charges:
Interest expense	$	381,268		$	317,615		$	230,186		$	142,549		$	105,929
Capitalized interest	15,918			15,625			1,937			—			824
Costs of debt retirement and write-off of related capitalized financing costs	42,921			23,668			51,448			—			—
Arch Western Resources, LLC dividends on preferred membership interest	—			72			91			107			58
Portions of rent which represent an interest factor	10,636			10,258			10,822			10,074			10,534
Total fixed charges	$	450,743		$	367,238		$	294,484		$	152,730		$	117,345
Ratio of earnings to fixed charges	N/A			N/A			1.25		x	1.92		x	0.75		x

Total loss consists of loss from continuing operations before income taxes and are adjusted to include only distributed income from affiliates accounted for on the equity method and fixed charges (excluding capitalized interest).  Fixed charges consist of interest incurred on indebtedness, the portion of operating lease rentals deemed representative of the interest factor and the amortization of debt expense.