Good discussion from the New York Times on what went wrong with the Deepwater Horizon’s blowout preventer.
On the night of April 20, minutes after an enormous blowout ripped through the Deepwater Horizon, the rig’s desperate crew pinned all hope on this last line of defense.
But the line did not hold.
via Lapses Found in Oversight of Failsafe Device on Oil Rig – NYTimes.com.