18 de septiembre de 1999
WV · Carbón
Empernador de techo, Empernador de roca, Empernador, Operador de soporte de techo móvil (MRS)
Muerte · DESPRENDIMIENTO DE TECHO O BÓVEDA
Copperas Coal Corp · Golpeado por objeto que cae
EE WAS STANDING BY THE CONTROLS ON THE R-SIDE OF THE MACHINE WHILE THE OPERATOR ON THE LEFT SIDE WAS SETTING THE ATRS. AS THE ATRS WAS PRESSURIZED AGAINST THE TOP. A PIECE OF ROCK 3 1/2 FT. X 5 FT. X 6 IN. FELL FRON THE ATRS BACK TOWARDS THE MACHINE BETWEEN THE R-RIB AND THE BOLTS ON THE R-SIDE STRIKING EMPLOYEE ON THE BACK.