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rbateman says:
None of the failsafes engaged, most likely indicating the control line(s)/remotes to the sea floor were severed.
At that point, the Deadman should have engaged. Suggests explosion travelling down.
Obamas first action was to deplay swat teams to adjacent rigs.
Add in H.S. and you have an implied threat from undisclosed sources. Could also be that the Admin. is doing something, even if its wrong.
No interviews of drilling crew says the lid is on tight.
So, we do not know what transpired out there.
Meantime, I hope somebody comes up with something ingenious to stem the flow, and quickly.