Registro de la MSHA sobre Mine No 4 (ID de mina 4607676). Muertes, incidentes no mortales agrupados por año, operador y controlador actuales, y contexto de la mina.
Avísenme cuando se presente un nuevo incidente de la MSHA en Mine No 4.
ROCK FALL WAS 18' WIDE X 15' LONG X15' HIGH. FALL WAS 90' OUTBY SURVEY STATION #27 MINING OF #3 SEAM BELOW & PRESENT OF WATER IN TOP. FALL WAS ORIGINALLY BOLTED WITH 6' RESIN BOLTS & 8' CONVEN TIAL BOLTS.
HE WAS DRILING ROOF BOLT HOLE. WAS GETTING READY TO ADD SECOND PIECE OF DRILL STEEL WHEN FIRST PIECE FELL OUT OF HOLE HITTING HAND WHICH WAS ON DRILL POT STRIKING SECOND FINGER.
HAD ROOF FALL IN #1 ENTRY APPROXIMATELY 150 FEET INBY SURVEY STATION #25. THIS WAS ABOUT 500 FEET OUTBY OF THE WORKING FACE. FALL WAS ABOUT 15' WIDE X 10' LONG X 9' HIGH. FALL WAS IN AN OLD ENTRY THAT WAS MINED IN 1923. WE CLEANED UP ORIGINAL FALL AND HA D BOLTED BACK WITH 6' ROSIN BOLTS.
HE WAS BEATING A PIECE OF ROCK OFF OF THE TAIL PIECE WHEN HE TWISTED HIS KNEE AND IT SLIPPED OUT OF PLACE.