BP pipeline failure : hearing before the Committee on Energy and Natural Resources, United States Senate, One Hundred Ninth Congress, second session, to receive testimony relating to the effects of the BP pipeline failure in the Prudhoe Bay oil field on U.S. oil supply and to examine what steps may be taken to prevent a recurrence of such an event, September 12, 2006. (U.S. G.P.O. :, 2007)