X0203
0000876661
NEW YORK STOCK EXCHANGE LLC
1166036
MARKWEST ENERGY PARTNERS L P
001-31239
1515 Arapahoe Street
Tower One, Suite 1600
Denver
CO
COLORADO
80202-2126
(303) 925-9200
Common Units representing limited partner interests
17 CFR 240.12d2-2(a)(3)
Benjamin Sawyer
Manager
2015-12-07