BP Says 'Top Kill' Has Risks

New Orleans, La. – BP is planning to start the operation Wednesday morning. BP executive Doug Suttles says it should be clear by Wednesday night if it's working.

"Once it starts going down the well the rest of the flow should go that way. But probably the biggest risk with the job is that the flow actually doesn't go down the well bore but goes out the end of the riser."

Suttles is also repeating warnings made over the weeks that this solution, like others that haven't worked, has never been tried a mile under water. He says pressure testing indicates that something is restricting the flow in the well, and crews are being careful not to make the leak even worse.
For NPR News, I'm Eileen Fleming in New Orleans.