It's been reported widely on US media over the last couple of days. Which is very weird, because the accident happened on February 3rd.
It seems like they tried their very hardest to cover it up, and almost got away with it.
I wouldn't want to own any part of Norfolk Southern now. The reports coming out about their business practises make pretty ugly reading. Maximizing profits whilst reducing spend on worker and public safety. I hope the inevitable barrage of lawsuits sends them out of operation......