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Filing Detail
Form 424B5 - Prospectus [Rule 424(b)(5)]:
SEC Accession No. 0001047469-15-005082
Filing Date
2015-05-29
Accepted
2015-05-29 06:01:00
Documents
5

Document Format Files

Seq Description Document Type Size
1 424B5 a2224939z424b5.htm 424B5 786156
2 G948925.JPG g948925.jpg GRAPHIC 25407
3 G699346.JPG g699346.jpg GRAPHIC 161413
4 G416666.JPG g416666.jpg GRAPHIC 54061
5 G669755.JPG g669755.jpg GRAPHIC 23818
  Complete submission text file 0001047469-15-005082.txt   1172432
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: 424B5 | Act: 33 | File No.: 333-184605-06 | Film No.: 15897043
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: 424B5 | Act: 33 | File No.: 333-184605 | Film No.: 15897038
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: 424B5 | Act: 33 | File No.: 333-184605-27 | Film No.: 15897066

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: 424B5 | Act: 33 | File No.: 333-184605-26 | Film No.: 15897044

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: 424B5 | Act: 33 | File No.: 333-184605-25 | Film No.: 15897064

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: 424B5 | Act: 33 | File No.: 333-184605-23 | Film No.: 15897056

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: 424B5 | Act: 33 | File No.: 333-184605-22 | Film No.: 15897037

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: 424B5 | Act: 33 | File No.: 333-184605-16 | Film No.: 15897050

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: 424B5 | Act: 33 | File No.: 333-184605-20 | Film No.: 15897053

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: 424B5 | Act: 33 | File No.: 333-184605-19 | Film No.: 15897051

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: 424B5 | Act: 33 | File No.: 333-184605-18 | Film No.: 15897049

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: 424B5 | Act: 33 | File No.: 333-184605-17 | Film No.: 15897065

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: 424B5 | Act: 33 | File No.: 333-184605-21 | Film No.: 15897054

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: 424B5 | Act: 33 | File No.: 333-184605-15 | Film No.: 15897052

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: 424B5 | Act: 33 | File No.: 333-184605-13 | Film No.: 15897063

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: 424B5 | Act: 33 | File No.: 333-184605-28 | Film No.: 15897067
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: 424B5 | Act: 33 | File No.: 333-184605-11 | Film No.: 15897060

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: 424B5 | Act: 33 | File No.: 333-184605-12 | Film No.: 15897061

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: 424B5 | Act: 33 | File No.: 333-184605-07 | Film No.: 15897068

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: 424B5 | Act: 33 | File No.: 333-184605-24 | Film No.: 15897042

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: 424B5 | Act: 33 | File No.: 333-184605-05 | Film No.: 15897058

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: 424B5 | Act: 33 | File No.: 333-184605-08 | Film No.: 15897041

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: 424B5 | Act: 33 | File No.: 333-184605-09 | Film No.: 15897059

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: 424B5 | Act: 33 | File No.: 333-184605-10 | Film No.: 15897045

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: 424B5 | Act: 33 | File No.: 333-184605-04 | Film No.: 15897062

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: 424B5 | Act: 33 | File No.: 333-184605-03 | Film No.: 15897057

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: 424B5 | Act: 33 | File No.: 333-184605-02 | Film No.: 15897048

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: 424B5 | Act: 33 | File No.: 333-184605-01 | Film No.: 15897055

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: 424B5 | Act: 33 | File No.: 333-184605-14 | Film No.: 15897046

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: 424B5 | Act: 33 | File No.: 333-184605-29 | Film No.: 15897047

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: 424B5 | Act: 33 | File No.: 333-184605-32 | Film No.: 15897040

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: 424B5 | Act: 33 | File No.: 333-184605-31 | Film No.: 15897039