0001126975-08-000010 4 1 20080124 20080128 20080128 MAGELLAN MIDSTREAM PARTNERS LP 0001126975 4610 731599053 DE 1231 ONE WILLIAMS CENTER, MD 28-1 TULSA OK 74172 918 574 7000 ONE WILLIAMS CENTER, MD 28-1 TULSA OK 74172 WILLIAMS ENERGY PARTNERS L P 20001024 OBRIEN GEORGE A 0001200174 4 34 001-16335 08552708 C/O INTERNATIONAL PAPER 400 ATLANTIC STREET STAMFORD CT 06921 4 1 edgar.xml PRIMARY DOCUMENT