Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Obama: Long Battle to Stop Gulf Oil Leak Coming to an End VOA News 04 August 2010 President Barack Obama Photo: AP President Barack Obama U.S. President Barack Obama says the long battle to stop the oil leak in the Gulf of Mexico and contain the oil is finally coming to an end.  Mr. Obama on Wednesday welcomed the news that the latest efforts to plug the well appear to be working. He said government scientists say the vast majority of oil in the water is gone. Mr. Obama also said recovery efforts will continue and that his government will hold the polluters accountable.  White House Energy Adviser Carol Browner said on U.S. television Wednesday that a new government study shows that about 75 percent of the oil spilled into the Gulf has been collected, burned off or broken down by natural forces. Earlier, oil company [1]BP said the so-called "static kill" operation initiated Tuesday has been successful. The operation involves pumping heavy mud into the well, and eventually sealing it permanently with cement. BP said after eight hours of pumping mud into the well, the mud was controlling pressure inside the well - which BP said was the desired outcome. It said pumping has stopped and experts are monitoring the well to see whether more mud is needed. The company said it will work with the government's oil response chief, retired Coast Guard Admiral Thad Allen, to decide whether to follow up the mud with an injection of cement through the same route. A temporary cap stopped the leak in mid-July. A 5,500-meter relief well is expected to be used later this month to permanently seal the well with mud and cement. U.S. scientists estimate nearly five million barrels of oil leaked from the damaged well, making it the largest accidental release of oil into the sea in history. The leak has caused environmental and economic damage in the Gulf, angering residents and creating hardship for people who rely on the waters for their livelihoods. BP is facing about $30 billion in cleanup costs. The company says it will sell its Colombian business to a consortium of Ecopetrol, Colombia's national oil company, and the Canadian company Talisman for $1.9 billion. References 1. http://www.bp.com/bodycopyarticle.do?categoryId=1&contentId=7052055 .