A federal report is finally released for the Darby Mine explosion in Harlan County.
The report released last night said a cutting torch is what caused a methane explosion. That explosion killed five Kentucky miners May 20, 2006.
Also according to the report, the accident occurred because the mine operator didn't observe basic safety practices and because critical safety standards were violated. The U.S. Mine Safety and Health Administration also said a safety barrier that blocked off an abandoned section of the coal mine was improperly built.
MSHA investigators met with family members of the miners on April 12, 2007, before it released the findings.
Federal regulators also announced a $336,000 fine against the operator of Kentucky Darby Mine Number One for six safety and health violations contributing to the accident.