British Petroleum downplayed the possibility of a catastrophic accident at an offshore rig that exploded, causing the worst U.S. oil spill in decades along the Gulf Coast and endangering shoreline habitat.
In its 2009 exploration plan and environmental impact analysis for the well, BP suggested it was unlikely, or virtually impossible, for an accident to occur that would lead to a giant crude oil spill and serious damage to beaches, fish and mammals.
At least 1.6 million gallons of oil have spilled so far since the April 20 explosion that killed 11 workers, according to Coast Guard estimates.