X0201 3 2003-11-01 0 0001166036 MARKWEST ENERGY PARTNERS L P MWE 0001270065 SEMPLE FRANK M C/O MARKWEST ENERGY PARTNERS, L.P. 155 INVERNESS DRIVE WEST, STE 200 ENGELWOOD CO 80112 1 1 0 0 President NO SECURITIES OWNED 0 D Lucy Woods POA for Frank M. Semple 2003-11-17