Oil companies stress one another's failures in a Senate hearing as cleanup and containment efforts continue in the Gulf of Mexico, after the explosion of the Deepwater Horizon oil rig April 20.
May 11 Lamar McKay, president and chairman of BP America, waits to testify before the Senate Energy and Natural Resources Committee over the Deepwater Horizon oil spill. McKay stressed the failure of the blowout preventer owned by rig operator Transocean. "The systems are intended to fail-close and be fail-safe," McKay said. "Sadly and for reasons we do not yet understand, in this case, they were not." Tracy A Woodward/The Washington Post Buy Photo