ALLEGED INCIDENT WAS TO HAVE OCCURRED WHILE EE WAS GETTING OUT OF UNA HAULER. HE SAID HE TRIPPED ON THE EDGE OF THE SEAT AND LANDED ON HIS KNEE. CAUSE OF INJURY WAS AWARNESS. COMPLIANCE WITH R ULES/REGS WAS NOT A FACTOR, MINER PROFICIENCY A FACTOR, MINING EQUIPM/SYSTEM NOT A FACTOR, SAFETY EQUIPMENT NOT A FACTOR.