X0101 EFFECT 33 LIVE 2007-01-23 09:15:00

S-4

0001166036 MARKWEST ENERGY PARTNERS L P 333-139151 0001315242 MarkWest Pipeline CO LP 333-139151-21 0001315262 MarkWest Energy East Texas Gas CO LP 333-139151-20 0001315263 MarkWest Energy Finance CORP 333-139151-19 0001292417 MarkWest Texas PNG Utility LP 333-139151-18 0001292416 MarkWest PNG Utility LP 333-139151-17 0001292413 MarkWest Western Oklahoma Gas CO LLC 333-139151-16 0001292415 MarkWest Pinnacle LP 333-139151-15 0001292411 MarkWest Michigan Pipeline CO LLC 333-139151-14 0001292410 MW Texas LTD LLC 333-139151-13 0001292412 MarkWest Texas GP LLC 333-139151-12 0001292409 MarkWest Energy Appalachia LLC 333-139151-11 0001292408 West Shore Processing CO LLC 333-139151-10 0001292407 Basin Pipeline LLC 333-139151-09 0001292419 MarkWest New Mexico LP 333-139151-08 0001292406 MarkWest Energy Operating CO LLC 333-139151-07 0001292414 MarkWest Power Tex LP 333-139151-06 0001292418 MarkWest Blackhawk LP 333-139151-05 0001349175 MarkWest Javelina CO 333-139151-04 0001349173 MarkWest Javelina Holding CO LP 333-139151-03 0001349174 Markwest Javelina Pipeline CO 333-139151-02 0001349172 MarkWest Javelina Pipeline Holding, LP 333-139151-01