BP said it had begun the process of evacuating personnel from offshore platforms and drilling rigs, while also beginning to shut-in production at its four operated platforms in the U.S. Gulf of Mexico, the Thunder Horse, Atlantis, Mad Dog and Na Kika. Meanwhile, Chevron said it was evacuating all personnel at its Big Foot, Genesis, Jack/St. Malo and Tahiiti platforms and initiating shut-in procedures.
