Thad Allen

Diane Sawyer will broadcast ABC's “World News” from the Gulf tonight and tomorrow. Sawyer talks to Adm. Thad Allen (Ret.) in tonight's broadcast about efforts to cap the BP oil spill. She broadcasts from Buras, La., tonight. She will be in a...

The Obama administration has asked BP if crews working on the oil spill in the Gulf of Mexico can step up oil-recapturing operations at the same time work is underway to replace the “top hat” well cap with a tighter-fitting......

BP will begin a complicated operation Saturday to install a new cap over the leaking well and additional ships are in place to collect the oil. The efforts could contain most of the spill in the coming week. Undersea robots......

Coast Guard Adm. Thad Allen said Wednesday that the federal government has given BP permission to begin pressure testing of the "capping stack" placed over its blown-out well in the Gulf of Mexico to see if the device can stop......

BP Senior Vice President Kent Wells on Wednesday morning detailed some of concerns voiced by experts that prompted the federal government to demand that the oil company delay a crucial well test that could determine whether a new cap can......

Lab tests indicate that most of the tar balls that washed up on Texas shores over the Fourth of July weekend were not related to the April 20 Deepwater Horizon oil spill. Test results on tar balls from the Bolivar......

With a leaky piece of undersea equipment repaired, engineers were ready to begin a twice-delayed test of the leaking BP well to determine if the well's piping beneath the sea floor is strong enough to withstand a full seal from......

BP has promised to satisfy the federal government's demands that it intensely monitor and report on the condition of the sea floor around its capped oil well in the Gulf of Mexico, where experts are concerned about the emergence of......

The federal oil-spill response chief Saturday extended by 24 hours a crucial test to measure the sturdiness of BP's troubled gulf oil well and to determine whether it is safe to keep a tight seal on top of it. In......

BP gingerly moved ahead with tests of its newly sealed oil well Friday, stepping up scanning the sea floor for leaks that would signal potential problems with an operation that has rarely gone as planned. The gusher of oil that......

The government has given BP the go-ahead to keep its well sealed for at least another day after concluding that there are no serious problems with the capping operation that has stopped the flow of oil into the gulf. Although......

The federal government will allow oil company BP to keep the seal on its Deep Horizon well for another 24 hours, and expects to receive details during that time of the company's plan to shoot mud into the top of......