THE MINER WAS FATALLY INJURED WHEN HE STEPPED OFF THE MUCKER HE WAS OPERATING. THE MINER PARKED THE LHD ON A 15% GRADE ON THE 66W RAMP. WHEN HE REMOVED HIMSELF FROM THE OPERATORS COMPARTMENT THE LHD BEGAN TO ROLL DOWN THE RAMP. THE MINER WAS CAUGHT BETWEEN THE BUCKET & THE RIB.