VICTIM AND CO-WORKERS WERE USING A 3/4"" LINK CHAIN TO PULL THE CONVEYER CHAIN OF THE HIGHWALL MINING MACHINE, THEY WERE UTILIZING THE HIGHWALL MINER POWER HEAD TO APPLY PULLING POWER. THE CHAI N BROKEUNDER TENSION AND STRUCK THE VICTIM IN THE MID AND LOWER TORSO RESULTING IN A BRUISED KIDNEY. MACHINERY TYPE ACCIDENT. LOST WORKDAYS.