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Form POS AM - Post-Effective amendments for registration statement:
SEC Accession No. 0001104659-15-083619
Filing Date
2015-12-08
Accepted
2015-12-08 16:30:55
Documents
1

Document Format Files

Seq Description Document Type Size
1 POS AM a15-24670_2posam.htm POS AM 238415
  Complete submission text file 0001104659-15-083619.txt   260126
Mailing Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126
Business Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126 303-925-9200
MARKWEST HYDROCARBON INC (Filer) CIK: 0001019756 (see all company filings)

IRS No.: 841352233 | State of Incorp.: DE | Fiscal Year End: 1231
Type: POS AM | Act: 33 | File No.: 333-206234-09 | Film No.: 151275986
SIC: 1311 Crude Petroleum & Natural Gas

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: POS AM | Act: 33 | File No.: 333-206234 | Film No.: 151275977
SIC: 1311 Crude Petroleum & Natural Gas

Mailing Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126
Business Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126 303-925-9200
MarkWest Energy Operating CO LLC (Filer) CIK: 0001292406 (see all company filings)

IRS No.: 270005448 | State of Incorp.: DE | Fiscal Year End: 1231
Type: POS AM | Act: 33 | File No.: 333-206234-17 | Film No.: 151275975

Mailing Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126
Business Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126 303-925-9200
West Shore Processing CO LLC (Filer) CIK: 0001292408 (see all company filings)

IRS No.: 760501616 | State of Incorp.: MI | Fiscal Year End: 1231
Type: POS AM | Act: 33 | File No.: 333-206234-16 | Film No.: 151275974

Mailing Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126
Business Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126 303-925-9200
MarkWest Energy Appalachia LLC (Filer) CIK: 0001292409 (see all company filings)

IRS No.: 470852385 | State of Incorp.: DE | Fiscal Year End: 1231
Type: POS AM | Act: 33 | File No.: 333-206234-15 | Film No.: 151275973

Mailing Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 70 DENVER CO 80202-2126
Business Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 70 DENVER CO 80202-2126 303-925-9200
MarkWest Michigan Pipeline CO LLC (Filer) CIK: 0001292411 (see all company filings)

IRS No.: 830375568 | State of Incorp.: MI | Fiscal Year End: 1231
Type: POS AM | Act: 33 | File No.: 333-206234-13 | Film No.: 151276004

Mailing Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126
Business Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126 303-925-9200
MarkWest Oklahoma Gas CO LLC (Filer) CIK: 0001292413 (see all company filings)

IRS No.: 861089780 | State of Incorp.: OK | Fiscal Year End: 1231
Type: POS AM | Act: 33 | File No.: 333-206234-12 | Film No.: 151276003

Mailing Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126
Business Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126 303-925-9200
MarkWest Power Tex LLC (Filer) CIK: 0001292414 (see all company filings)

IRS No.: 450537840 | State of Incorp.: TX | Fiscal Year End: 1231
Type: POS AM | Act: 33 | File No.: 333-206234-29 | Film No.: 151275997

Mailing Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126
Business Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126 303-925-9200
MarkWest Pinnacle LLC (Filer) CIK: 0001292415 (see all company filings)

IRS No.: 300157461 | State of Incorp.: TX | Fiscal Year End: 1231
Type: POS AM | Act: 33 | File No.: 333-206234-10 | Film No.: 151276001

Mailing Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202
Business Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202 303-925-9200
MarkWest PNG Utility LLC (Filer) CIK: 0001292416 (see all company filings)

IRS No.: 300157467 | State of Incorp.: TX | Fiscal Year End: 1231
Type: POS AM | Act: 33 | File No.: 333-206234-32 | Film No.: 151276000

Mailing Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126
Business Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126 303-925-9200
MarkWest Texas PNG Utility LLC (Filer) CIK: 0001292417 (see all company filings)

IRS No.: 300157468 | State of Incorp.: TX | Fiscal Year End: 1231
Type: POS AM | Act: 33 | File No.: 333-206234-31 | Film No.: 151275999

Mailing Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126
Business Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126 303-925-9200
MarkWest Blackhawk LLC (Filer) CIK: 0001292418 (see all company filings)

IRS No.: 300157471 | State of Incorp.: TX | Fiscal Year End: 1231
Type: POS AM | Act: 33 | File No.: 333-206234-30 | Film No.: 151275998

Mailing Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126
Business Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126 303-925-9200
MarkWest New Mexico LLC (Filer) CIK: 0001292419 (see all company filings)

IRS No.: 300157474 | State of Incorp.: TX | Fiscal Year End: 1231
Type: POS AM | Act: 33 | File No.: 333-206234-11 | Film No.: 151276002

Mailing Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126
Business Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126 303-925-9200
MarkWest Pipeline CO LLC (Filer) CIK: 0001315242 (see all company filings)

IRS No.: 000000000 | State of Incorp.: TX | Fiscal Year End: 1231
Type: POS AM | Act: 33 | File No.: 333-206234-28 | Film No.: 151275996

Mailing Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126
Business Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126 303-925-9200
MarkWest Energy East Texas Gas CO LLC (Filer) CIK: 0001315262 (see all company filings)

IRS No.: 201311706 | State of Incorp.: DE | Fiscal Year End: 1231
Type: POS AM | Act: 33 | File No.: 333-206234-27 | Film No.: 151275995

Mailing Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126
Business Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126 303-925-9200
MarkWest Energy Finance CORP (Filer) CIK: 0001315263 (see all company filings)

IRS No.: 201805917 | State of Incorp.: DE | Fiscal Year End: 1231
Type: POS AM | Act: 33 | File No.: 333-206234-18 | Film No.: 151275976
SIC: 1311 Crude Petroleum & Natural Gas

Mailing Address 1515 ARAPAHOE STREET TOWER 2, SUITE 700 DENVER CO 80202-2126
Business Address 1515 ARAPAHOE STREET TOWER 2, SUITE 700 DENVER CO 80202-2126 303-925-9278
Markwest Javelina Pipeline CO LLC (Filer) CIK: 0001349174 (see all company filings)

IRS No.: 382909338 | State of Incorp.: TX | Fiscal Year End: 1231
Type: POS AM | Act: 33 | File No.: 333-206234-23 | Film No.: 151275991

Mailing Address 1515 ARAPAHOE STREET TOWER 2, SUITE 700 DENVER CO 80202-2126
Business Address 1515 ARAPAHOE STREET TOWER 2, SUITE 700 DENVER CO 80202-2126 303-925-9200
MarkWest Javelina CO LLC (Filer) CIK: 0001349175 (see all company filings)

IRS No.: 760263770 | State of Incorp.: TX | Fiscal Year End: 1231
Type: POS AM | Act: 33 | File No.: 333-206234-24 | Film No.: 151275992

Mailing Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202
Business Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202 303-925-9200
MarkWest Energy GP, L.L.C. (Filer) CIK: 0001412304 (see all company filings)

IRS No.: 010636219
Type: POS AM | Act: 33 | File No.: 333-206234-19 | Film No.: 151275987

Mailing Address 1515 ARAPAHOE STREET TOWER II, SUITE 700 HOUSTON TX 80202
Business Address 1515 ARAPAHOE STREET TOWER II, SUITE 700 HOUSTON TX 80202 3039259200
Mason Pipeline LTD Liability CO (Filer) CIK: 0001435921 (see all company filings)

IRS No.: 000000000 | State of Incorp.: MI | Fiscal Year End: 1231
Type: POS AM | Act: 33 | File No.: 333-206234-14 | Film No.: 151275972

Mailing Address 1515 ARAPAHOE STREET TOWER II, SUITE 700 HOUSTON TX 80202
Business Address 1515 ARAPAHOE STREET TOWER II, SUITE 700 HOUSTON TX 80202 3039259200
MarkWest Marketing, L.L.C. (Filer) CIK: 0001435922 (see all company filings)

IRS No.: 262430225 | State of Incorp.: DE | Fiscal Year End: 1231
Type: POS AM | Act: 33 | File No.: 333-206234-08 | Film No.: 151275985

Mailing Address 1515 ARAPAHOE STREET TOWER II, SUITE 700 HOUSTON TX 80202
Business Address 1515 ARAPAHOE STREET TOWER II, SUITE 700 HOUSTON TX 80202 3039259200
MarkWest Gas Services, L.L.C. (Filer) CIK: 0001435923 (see all company filings)

IRS No.: 261795927 | State of Incorp.: TX | Fiscal Year End: 1231
Type: POS AM | Act: 33 | File No.: 333-206234-20 | Film No.: 151275988

Mailing Address 1515 ARAPAHOE STREET TOWER II, SUITE 700 HOUSTON TX 80202
Business Address 1515 ARAPAHOE STREET TOWER II, SUITE 700 HOUSTON TX 80202 3039259200
MarkWest Liberty Gas Gathering, L.L.C. (Filer) CIK: 0001435924 (see all company filings)

IRS No.: 262368254 | State of Incorp.: DE | Fiscal Year End: 1231
Type: POS AM | Act: 33 | File No.: 333-206234-21 | Film No.: 151275989

Mailing Address 1515 ARAPAHOE STREET TOWER II, SUITE 700 DENVER CO 80202
Business Address 1515 ARAPAHOE STREET TOWER II, SUITE 700 DENVER CO 80202 3039259200
Matrex, L.L.C. (Filer) CIK: 0001435926 (see all company filings)

IRS No.: 841349848 | State of Incorp.: MI | Fiscal Year End: 1231
Type: POS AM | Act: 33 | File No.: 333-206234-22 | Film No.: 151275990

Mailing Address 1515 ARAPAHOE STREET TOWER 2, SUITE 700 DENVER CO 80202-2126
Business Address 1515 ARAPAHOE STREET TOWER 2, SUITE 700 DENVER CO 80202-2126 303-925-9200
MarkWest Gas Marketing, L.L.C. (Filer) CIK: 0001457473 (see all company filings)

IRS No.: 262827902 | State of Incorp.: TX | Fiscal Year End: 1231
Type: POS AM | Act: 33 | File No.: 333-206234-07 | Film No.: 151275984

Mailing Address 1515 ARAPAHOE STREET TOWER 2, SUITE 700 DENVER CO 80202-2126
Business Address 1515 ARAPAHOE STREET TOWER 2, SUITE 700 DENVER CO 80202-2126 303-925-9200
MarkWest McAlester, L.L.C. (Filer) CIK: 0001457474 (see all company filings)

IRS No.: 263195589 | State of Incorp.: OK | Fiscal Year End: 1231
Type: POS AM | Act: 33 | File No.: 333-206234-06 | Film No.: 151275983

Mailing Address 1515 ARAPAHOE STREET TOWER 1, SUITE 1600 DENVER CO 80202-2137
Business Address 1515 ARAPAHOE STREET TOWER 1, SUITE 1600 DENVER CO 80202-2137 (303) 925-9200
MarkWest Ranger Pipeline Company, L.L.C. (Filer) CIK: 0001512400 (see all company filings)

IRS No.: 274613260 | State of Incorp.: DE | Fiscal Year End: 1231
Type: POS AM | Act: 33 | File No.: 333-206234-05 | Film No.: 151275982

Mailing Address 1515 ARAPAHOE STREET TOWER I, STE. 1600 DENVER CO 80202-2137
Business Address 1515 ARAPAHOE STREET TOWER I, STE. 1600 DENVER CO 80202-2137 (303) 925-9200
MarkWest Mountaineer Pipeline Company, L.L.C. (Filer) CIK: 0001533090 (see all company filings)

IRS No.: 453160452 | State of Incorp.: DE | Fiscal Year End: 1231
Type: POS AM | Act: 33 | File No.: 333-206234-04 | Film No.: 151275981

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 Utica Operating Company, L.L.C. (Filer) CIK: 0001555528 (see all company filings)

IRS No.: 800773356 | State of Incorp.: DE | Fiscal Year End: 1231
Type: POS AM | Act: 33 | File No.: 333-206234-03 | Film No.: 151275980

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 Texas LPG Pipeline, L.L.C. (Filer) CIK: 0001565135 (see all company filings)

IRS No.: 900906688 | State of Incorp.: TX | Fiscal Year End: 1231
Type: POS AM | Act: 33 | File No.: 333-206234-01 | Film No.: 151275978

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 Buffalo Creek Gas Company, L.L.C. (Filer) CIK: 0001625169 (see all company filings)

IRS No.: 320408108 | State of Incorp.: DE | Fiscal Year End: 1231
Type: POS AM | Act: 33 | File No.: 333-206234-02 | Film No.: 151275979

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 South Texas Gas Company, L.L.C. (Filer) CIK: 0001625171 (see all company filings)

IRS No.: 800901416 | State of Incorp.: DE | Fiscal Year End: 1231
Type: POS AM | Act: 33 | File No.: 333-206234-26 | Film No.: 151275994

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 West Texas Gas Company, L.L.C. (Filer) CIK: 0001643186 (see all company filings)

IRS No.: 352530047 | State of Incorp.: DE | Fiscal Year End: 1231
Type: POS AM | Act: 33 | File No.: 333-206234-25 | Film No.: 151275993