Top kill procedure working

Workers have stopped the flow of oil and gas into the Gulf of Mexico from a BP well, according to U.S. Coast Guard Adm. Thad Allen. The "top kill" effort, launched Wednesday, had pumped enough drilling fluid to block oil and gas spewing from the well and drop the pressure, Allen said. Once the pressure drops to zero, workers will begin pumping cement into the hole to entomb the well. (Sources: Multiple, including Tribune Washington Bureau via Sun Herald, Los Angeles Times, 05/27/10)