EE WAS DRILLING HOLES INTO MINE ROOF & INSTALLING 1' BOLTS WITH CLIPS TO SUPPORT THE CONVEYOR BELT. HE REACHED FOR BOLT WRENCH & ACTIVATED THEVALVE FOR STABILIZER BAR THIS LOWERED STABILIZER A GROUZER ON THE BAR CAUGHT FOOT, CAUSING A PUNCTURE WOUND & FRACTURING BONE IN BIG TOE STARTED LOSING TIME 2/13/01