Moment of silence today for anniversary of deadly blast

March 23, 2012 4:26:49 AM PDT
Today, the BP Refinery in Texas City will hold a moment of silence to mark the seventh anniversary of a deadly explosion.

The refinery will honor the 15 contract workers killed and more than 170 injured in the blast. Federal investigators blamed the explosion on a culture that valued costs over the safety of workers.

BP agreed to improve safety, and the government says the company has fixed the problems that led to the blast.