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Filing Detail
Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0001047469-12-001759
Filing Date
2012-02-28
Accepted
2012-02-28 16:02:09
Documents
23
Period of Report
2011-12-31

Document Format Files

Seq Description Document Type Size
1 10-K a2207469z10-k.htm 10-K 2490722
2 EX-4.22 a2207469zex-4_22.htm EX-4.22 61380
3 EX-4.23 a2207469zex-4_23.htm EX-4.23 139287
4 EX-10.33 a2207469zex-10_33.htm EX-10.33 15730
5 EX-10.34 a2207469zex-10_34.htm EX-10.34 182791
6 EX-10.35 a2207469zex-10_35.htm EX-10.35 429694
7 EX-12.1 a2207469zex-12_1.htm EX-12.1 25594
8 EX-21.1 a2207469zex-21_1.htm EX-21.1 12195
9 EX-23.1 a2207469zex-23_1.htm EX-23.1 2882
10 EX-31.1 a2207469zex-31_1.htm EX-31.1 7896
11 EX-31.2 a2207469zex-31_2.htm EX-31.2 7937
12 EX-32.1 a2207469zex-32_1.htm EX-32.1 5585
13 EX-32.2 a2207469zex-32_2.htm EX-32.2 5623
20 G30067.JPG g30067.jpg GRAPHIC 32361
21 G420550.JPG g420550.jpg GRAPHIC 21903
22 G38867.JPG g38867.jpg GRAPHIC 41288
23 G386800.JPG g386800.jpg GRAPHIC 41753
  Complete submission text file 0001047469-12-001759.txt   20523335

Data Files

Seq Description Document Type Size
14 EX-101.INS mwe-20111231.xml EX-101.INS 3169032
15 EX-101.SCH mwe-20111231.xsd EX-101.SCH 130848
16 EX-101.CAL mwe-20111231_cal.xml EX-101.CAL 212244
17 EX-101.LAB mwe-20111231_lab.xml EX-101.LAB 1841890
18 EX-101.PRE mwe-20111231_pre.xml EX-101.PRE 880158
19 EX-101.DEF mwe-20111231_def.xml EX-101.DEF 596758
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: 10-K | Act: 34 | File No.: 001-31239 | Film No.: 12647144
SIC: 1311 Crude Petroleum & Natural Gas