Gulf leak eclipses Exxon Valdez as worst US spill


ROBERT, Louisiana: As BP labored a second day Thursday to choke off the leak at the bottom of the Gulf of Mexico, dire new government estimates showed the disaster has easily eclipsed the Exxon Valdez as the biggest oil spill in U.S. history.

The company announced late in the day that it had suspended shooting heavy drilling mud into the blown-out well 5,000 feet (1,520 meters) underwater around midnight Wednesday so it could bring in more materials.

Thursday evening, BP PLC said it had resumed the pumping procedure known as a top kill. Officials said it could be late Friday or the weekend before the company knows if it has cut off the oil that has been flowing for five weeks.

As the world waited, President Barack Obama announced major new restrictions on drilling projects, and the head of the federal agency that regulates the industry resigned under pressure, becoming the highest-ranking political casualty of the crisis so far.

BP insisted the top kill was progressing as planned, though the company acknowledged drilling mud was escaping from the broken pipe along with the leaking crude.

"The fact that we had a bunch of mud going up the riser isn't ideal but it's not necessarily indicative of a problem," said spokesman Tom Mueller.

Early on Thursday, officials said the process was going well, but later in the day they announced pumping had been suspended 16 hours earlier.

The top kill is the latest in a string of attempts to stop the oil that has been spewing since the drilling rig Deepwater Horizon exploded April 20. Eleven workers were killed.

If the procedure works, BP will inject cement into the well to seal it permanently. If it doesn't, the company has a number of backup plans.

Either way, crews will continue to drill two relief wells, considered the only surefire way to stop the leak.

A top kill has never been attempted before so deep underwater.

BP Chief Operating Officer Doug Suttles said the company is also considering shooting small, dense rubber balls or assorted junk such as golf balls and rubber scraps to stop up a crippled five-story piece of equipment known as a blowout preventer to keep the mud from escaping.

The stakes were higher than ever as public frustration over the spill grew and a team of government scientists said the oil has been flowing at a rate 2{ to five times higher than what BP and the Coast Guard previously estimated.

Two teams of scientists calculated the well has been spewing between 504,000 (1,907,790) and more than 1 million gallons (3.8 million liters) a day.

Even using the most conservative estimate, that means about 18 million gallons (68 million liters) have spilled so far.

In the worst-case scenario, 39 million gallons (145 million liters) have leaked.

That larger figure would be nearly four times the size of the Exxon Valdez disaster, in which a tanker ran aground in Alaska in 1989, spilling nearly 11 million gallons (41.6 million liters).

"Now we know the true scale of the monster we are fighting in the Gulf," said Jeremy Symons, vice president of the National Wildlife Federation.

"BP has unleashed an unstoppable force of appalling proportions."

BP spokesman Steve Rinehart said the previous estimate of 210,000 gallons (794,910 liters) a day was based on the best data available at the time.

As for the new figures, he said: "It does not and will not change the response. We are going all out on our response."

The spill is not the biggest ever in the Gulf. In 1979, a drilling rig in Mexican waters - the Ixtoc I - blew up, releasing 140 million gallons (530 million liters) of oil.

In another troubling discovery, marine scientists said they have spotted a huge new plume of what they believe to be oil deep beneath the Gulf, stretching 22 miles (35 kilometers) from the leaking wellhead northeast toward Mobile Bay in Alabama.

They fear it could have resulted from using chemicals a mile (kilometer) below the surface to break up the oil.

In Washington, Elizabeth Birnbaum stepped down as director of the Minerals Management Service, a job she had held since last July.

Her agency has been harshly criticized over lax oversight of drilling and cozy ties with industry.

An internal Interior Department report released earlier this week found that between 2000 and 2008, agency staff members accepted tickets to sports events, lunches and other gifts from oil and gas companies and used government computers to view pornography.

Polls show the public is souring on the administration's handling of the catastrophe, and Obama sought to assure Americans that the government is in control and deflect criticism that his administration has left BP in charge.

"My job right now is just to make sure everybody in the Gulf understands: This is what I wake up to in the morning, and this is what I go to bed at night thinking about. The spill," he said.

Obama said he would end the "scandalously close relationship" between regulators and the oil companies they oversee.

He also extended a freeze on new deepwater oil drilling and canceled or delayed proposed lease sales in the waters off Alaska and Virginia and along the Gulf Coast.

Fishermen, hotel and restaurant owners, politicians and residents along the 100-mile (160-kilometer) stretch of Gulf coast affected by the spill are fed up with BP's failures to stop the spill.

Thick oil is coating birds and delicate wetlands in Louisiana.

"I have anxiety attacks," said Sarah Rigaud, owner of Sarah's Restaurant in Grand Isle, Louisiana, where the beach was closed because blobs of oil that looked like melted chocolate had washed up on shore.

"Every day I pray that something happens, that it will be stopped and everybody can get back to normal."

Charlotte Randolph, president of Louisiana's Lafourche Parish, one of the coastal parishes affected by the spill, said: "I mean, it's wearing on everybody in this coastal region. You see it in people's eyes. You see it. We need to stop the flow." - AP

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