The vessel that went down was a drill ship, not an oil platform that most people think of when they hear the term "oil rig". From what I've heard, any member of the crew had stop-work authority, so if anyone had noticed any kind of safety issue, risky shortcuts being taken, corner-cutting, etc., they had the power to cause all work to be stopped until concerns were addressed and proper conditions were met. Almost immediately after the incident, merchant mariners from all over the area flocked in to assist. BP flew in experts from all over the world within 24 hours to try and assess the situation and figure out ways to minimize the environmental impact. The scene at the bottom of the ocean there is not simple, there is a whole infrastructure of complicated equipment down there, not to mention the wreckage of the drilling ship itself. Sadly, the only people who knew what happened were probably the ones that lost their lives in the explosion. It's way too early for anyone to be able to identify the cause, whether it was equipment failure, sabotage, human error, some unforseeable event, etc. I can't imagine that the entire crew, from top to bottom, would conspire to cut corners and risk their lives and operate the vessel in an unsafe manner.

