Exhibit 12.1

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

	Three Months Ended March 31
	2009			2008
Earnings:
Pretax income excluding income or loss from equity investments	$	23,739		$	96,949
Adjustments:
Fixed charges		23,213			25,368
Distributed income from equity investments		717			545
Capitalized interest, net of amortization		892			(1,183	)
Arch Western Resources, LLC dividends on preferred membership interest		(20	)		(29	)
Total earnings	$	48,541		$	121,650
Fixed charges:
Interest expense		20,018		$	20,488
Capitalized interest		197			2,073
Arch Western Resources, LLC dividends on preferred membership interest		20			29
Portions of rent which represent an interest factor		2,978			2,778
Total fixed charges	$	23,213		$	25,368
Preferred stock dividends		—			18
Total fixed charges and preferred stock dividends	$	23,213		$	25,386
Ratio of earnings to combined fixed charges and preference dividends		2.09	x		4.79	x

Earnings consist of income from 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.