August 3, 2010 Houston, Texas (CNN)
BP says it has started its effort to help seal its crippled well in the Gulf of Mexico through a "static kill" by pumping mud into the well from above.
The move started at about 4 P.m. ET, the company said in a news relese.
It said the operation is being carried out with the approval of the federal official overseeing the response to the oil sill, retired Adm. Thad Allen.