New Orleans, La. – The damaged blowout preventer will be met by a dozen government investigators on board the vessel. They're charged with preserving the device as evidence for determining what caused the Deepwater Horizon rig explosion. National Incident Commander Thad Allen says there's little risk of oil leaking from the well while a new blowout preventer is installed, but ships are standing by just in case. Allen says the blown-out well is plugged up with mud and cement fired in from the top. And he's ordered another shot of mud and cement be made into the well from the bottom as a permanent seal. Allen says the final plug is expected to be finished after Labor Day.
For NPR News, I'm Eileen Fleming in New Orleans.