The UK supermajor said that visual inspections from flights show minimal damage to most platforms and "no obvious signs of oil spills or sheens attributable to BP operations".

The most significant damage indeed appears to be to the Mad Dog spar, which was directly in Hurricane Ike's path at Green Canyon Block 823.

The rig's derrick, which sits atop the spar deck, was toppled and is on the sea bed.

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