EXHIBIT 11

MARKWEST HYDROCARBON, INC.
COMPUTATION OF EARNINGS PER COMMON SHARE
(000s, except per share data)

	For the Quarter Ended		Year to date
	June 30, 2001		June 30, 2001
Net income	$	8	$	1,457
Weighted average number of outstanding shares of common stock	8,473		8,469
Basic earnings per share	$	0.00	$	0.17
Net income	$	8	$	1,457
Weighted average number of outstanding shares of common stock	8,473		8,469
Dilutive stock options	16		29
	8,489		8,498
Earnings per share assuming dilution	$	0.00	$	0.17