Are they likely to be able to pin the cause down?
Eventually, yes. Maybe not this week, but they can figure out what happened. Hell, it could be a diesel fuel tank on deck (although diesel doesn’t really explode, it burns), or acetylene gas canisters (both unrelated to the production oil or gas). The question is, will they (the feds) tell the public the truth, or use this as a means to a political end?