THE EMPLOYEE STATED HE WAS HELPING INSTALL RIB BOLTS AND THE VENTILATION CURTAIN WAS ROLLED UP ON THE RIB AND HAD STARTED TO COME LOOSE. HE REACHED OVER THE DRILL STEEL TO HOLD THE CURTAIN OFF THE RIB DRILL AND THE DRILL STEEL GRABBED THE CURTAIN AND WRAPPED AROUND HIS ARM. PLEASE NOTE: LOST TIME DID NOT START UNTIL 4/26/02.