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Efforts to stem the Deepwater Horizon oil spill : ウィキペディア英語版 | Efforts to stem the Deepwater Horizon oil spill
Efforts to stem the Deepwater Horizon oil spill were ongoing from the time that the ''Deepwater Horizon'' exploded on April 20, 2010 until the well was sealed by a cap on July 15, 2010.〔http://www.nytimes.com/2010/07/16/us/16spill.html?hp New York Times – July 16, 2010〕 Various species of dolphins and other mammals (61 casualties), birds (2,095 casualties), and the endangered sea turtles (467 casualties) have been killed either directly or indirectly by the oil spill.〔( Collection Report )(PDF). U.S. Fish and Wildlife Service. 5 July 2010.〕 The ''Deepwater Horizon'' spill has surpassed in volume the 1989 ''Exxon Valdez'' oil spill as the largest ever to originate in U.S.-controlled waters; it is comparable to the 1979 Ixtoc I oil spill in total volume released (Ixtoc discharged to ; as of mid-July 2010, Deepwater Horizon has spilled to ).〔 〕 Much of the oil is so far down in the Gulf that only nature, including microbes, will be able to remove it using a process called bioremediation.〔(Berkeley scientist advises on clean-up in gulf oil spill - June 4, 2010 ) U.S. Fish and Wildlife Service. 5 July 2010.〕 Terry Hazen of the Department of Energy's Lawrence Berkeley National Laboratory said the process could take months or years.〔 But after six weeks of research, he said that microbes could work quickly in water as opposed to colder-temperature waters. The ''A Whale'', which is an oil tanker converted into a giant oil skimmer owned by the Taiwan Marine Transport Co (TMT), could do little because of BP's use of chemical dispersants, the company said.〔(Giant oil skimmer 'A Whale' deemed a bust for Gulf of Mexico spill | NOLA.com )〕 Robert Bea of The University of California, who worked on the Ixtoc spill and the 1969 Santa Barbara oil spill, said the old methods would be the best ones. Dispersants, he said, did not work except in keeping beaches clean, and they hurt the environment.〔 ==Non-explosive closure attempts==
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