THE INJURED WAS OPERATING A TWIN HEAD ROOF BOLTER FROM THE OPERATORS SIDE OF THE MACHINE, AS HE EXTENDED HIS LEFT HAND OUT FROM UNDER THE OPERATORS CANOPY TO RETRIVE THE DRILL STEEL FROM THE D RILLING HEAD A ROCK 12"" X 14"" X 1"" THICK FELL FROM THE MINE ROOF STRIKING HIM ON THE LEFT HAND. RESULTED IN A BROKEN METACARPAL BONE IN THE LEFT HAND OF THE 4TH FINGER. INJURED WAS WEARING ME