[CRedskinsRule]

Here is an interesting article on what is being done. It is from 4 days ago, so there are newer details I am sure:

Robot plugging Gulf oil spill

Crews are using robot submarines to activate valves at the well head in hopes of cutting off the leak, which threatens the Gulf Coast's fragile ecosystem of shrimp, fish, birds and coral. If the effort fails, they'll have to start drilling again.

The submarine work will take 24 to 36 hours, Doug Suttles, chief operating officer for BP Exploration and Production, said Sunday afternoon. "I should emphasize this is a highly complex operation being performed at 5,000 feet below the surface and it may not be successful," he said.

Oil continued to leak nearly a mile underwater Sunday at the site where the Deepwater Horizon rig exploded on Tuesday. Eleven workers are missing and presumed dead. For the second consecutive day, high waves prevented boats and equipment from going out to clean the spill. Airplanes sprayed chemicals to break up the oil.