0001347652-08-000012 SC 13G/A 1 20080212 20080212 MAGELLAN MIDSTREAM PARTNERS LP 0001126975 4610 731599053 DE 1231 SC 13G/A 34 005-61147 08598345 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 TORTOISE CAPITAL ADVISORS LLC 0001280965 223875939 KS 1231 SC 13G/A 233 WEST 47TH STREET OLVERLAND PARK KS 66212 SC 13G/A 1 tca13gmagellan.htm TCA SCHEDULE 13GA MAGELLAN