Safety of rig had been a concern for months

Ian Urbina, of The New York Times, reports that internal documents from BP showed that “there were serious problems and safety concerns with the Deepwater Horizon rig far earlier than those the company described to Congress last week. The problems involved the well casing and the blowout preventer, which are considered critical pieces in the chain of events that led to the disaster on the rig.”  BP noted these concerns over 11 months ago.