RENEE MONTAGNE, host:
The federal commission investigating the BP blowout in the Gulf of Mexico has laid out its preliminary narrative of the disaster. Eleven men were killed last April on the Deepwater Horizon rig. The investigators are still finalizing their conclusions about what went wrong. In the meantime, as NPR's Richard Harris reports, the companies involved are still arguing over who's to blame.
RICHARD HARRIS: If you're looking for one tidy explanation for the oil spill, you're sure to be disappointed. Commission co-chair Bob Graham says it's wise to consider the words of the federal panel that investigated the Columbia space shuttle disaster back in 2003.
Mr. BOB GRAHAM: Complex systems fail in complex ways.
HARRIS: The commission laid out a long list of things that went wrong in the Gulf. It starts with bad cement, followed by a bad test to see if the cement was holding. Then, people on the rig missed warning signs that a blowout was imminent, and there are still major questions about how the last line of defense, the blowout preventer, behaved during the disaster.
But with all this, the committee's chief staffer, a theatrical trial-lawyer named Fred Bartlit, started out calling into question a widely held belief about the disaster, namely that BP cut corners to save time and money.
Mr. FRED BARTLIT (Attorney): We've studied the hell out of this. We welcome anybody that gives us something we've missed, but we don't see a person or three people sitting there at a table considering safety and costs and giving up safety for costs. We have not seen that.
HARRIS: As Bartlit set out to pull the pieces of information into a single narrative, he found he mostly agreed with BP's own internal investigation. For example, the commission agrees with BP that the oil and gas came up through the middle of the pipe in the oil well, not up and around the sides.
Representatives from the major companies involved in the disaster were called to testify at the hearing. And when they were asked if anyone disagreed about where the oil came up, the man from Halliburton spoke up.
Mr. RICHARD VARGO (Halliburton): My name is Richard Vargo. I'm the Gulf of Mexico cementing manager for the region. And I do disagree with the conclusion that's drawn.
HARRIS: Halliburton's view is that the oil and gas squeezed up along the outside of the pipe, and that was a result of a bad well design by BP, not because the cement job that Halliburton engineered was bad.
Vargo's explanation about how the oil got outside of the pipe was highly technical and apparently even confusing to the BP man testifying at the hearing, Mark Bly.� Committee lawyer Bartlit asked Bly if he agreed with it.
Mr. BARTLIT: You understand the point Mr. Vargo's making?
Mr. MARK BLY (BP): I could not follow the logic of his description.
HARRIS: As the afternoon wore on, they debated evidence for and against this and many other elements of the disaster. And the committee staff complained that they may never get to the bottom of some technical issues, because certain Senators blocked the commission's ability to issue subpoenas and gather testimony under oath.
But William Reilly, the other co-chairman of the commission, concluded that at heart it wasn't a technical problem. It was a human failing, an assumption that the problems involved in sinking this well through a mile of water and two and a half miles of rock were all routine and manageable.
Mr. WILLIAM REILLY: It's very difficult for me to conclude that there was not a culture of complacency affecting everything involved with this exercise, with this experience.
HARRIS: The commission continues hearing from experts today and has until mid-January to reach its final conclusions about the Deepwater Horizon disaster.
Richard Harris, NPR News, Washington.
(Soundbite of music)
MONTAGNE: This is NPR News.
NPR transcripts are created on a rush deadline by a contractor for NPR, and accuracy and availability may vary. This text may not be in its final form and may be updated or revised in the future. Please be aware that the authoritative record of NPR's programming is the audio.