Leaking oil well finally sealed

A leaking well which spewed millions of barrels of oil into the Gulf of Mexico was finally sealed, US officials said.

A leaking well which spewed millions of barrels of oil into the Gulf of Mexico was finally sealed, US officials said.

Oil giant BP killed the leak by pumping cement into the bottom, ending a five-month battle that started when one of its oil rigs exploded.

The Deepwater Horizon rig blew up on April 20, killing 11 workers.

A cap sealed the flow of oil three months later.

But the ruptured well could not be declared dead until a relief well was drilled, and a pressure test confirmed that the plug was holding.

Coast Guard Admiral Thad Allen, the federal official who oversaw the disaster, said the well was "effectively dead".

"Additional regulatory steps will be undertaken but we can now state definitively that the Macondo Well poses no continuing threat to the Gulf of Mexico," he said.

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