New information shows a lack of proper safety precautions are to blame for the crisis in the Gulf.
Comparing it to natural disasters like the Titanic and Challenger explosions, some senators are saying the rig explosion is due to company negligence.
Investigators have discovered a key safety feature known as the 'blowout preventer' was leaking before the disaster.
They have also found the battery used to power the device had been dead for quite some time.
Officials also accuse BP of ignoring discrepancies in pressure readings that were found just hours before the rig exploded.