EDGAR Filing Documents for 9999999997-13-008769

Form ARS - Annual Report to Security Holders:

SEC Accession No. 9999999997-13-008769

Filing Date

2013-04-24

Accepted

2013-04-25 15:31:33

Documents

Period of Report

2012-12-31

Effectiveness Date

2013-04-24

Document Format Files

Seq	Description	Document	Type	Size
1	AUTO-GENERATED PAPER DOCUMENT	9999999997-13-008769.paper	ARS	290
	Scanned paper document	scanned.pdf		23484666
	Complete submission text file	9999999997-13-008769.txt		1338

Mailing Address 1515 ARAPAHOE STREET TOWER 1, SUITE 1600 DENVER CO 80202

Business Address 1515 ARAPAHOE STREET TOWER 1, SUITE 1600 DENVER CO 80202 303-925-9200

MARKWEST ENERGY PARTNERS L P (Filer) CIK: 0001166036 (see all company filings)

IRS No.: 270005456 | Fiscal Year End: 1231
Type: ARS | Act: 34 | File No.: 001-31239 | Film No.: 13001833
SIC: 1311 Crude Petroleum & Natural Gas