>Internal documents from BP show that there were serious problems and safety concerns with the Deepwater Horizon rig far earlier than those the company described to Congress last week. < http://www.nytimes.com/2010/05/30/us/30rig.html?src=un&feedurl=http%3A%2F%2Fjson8.nytimes.com%2Fpages%2Fnational%2Findex.jsonp