ALLEGED INCIDENT WAS TO OCCUR WHILE THIS EE WAS LOOKING FOR A LOCOMOTIVE TO OPERATE. HE SAID HE RAN INTO A TROLLEY HANGER IN THE ROOF. CAUSE OF INJURY WAS AWARENESS. RULES/REGS NOT A FACTOR, MINER PROFICIENCY A FACTOR, MINING EQUIP/SYSTEMSNOT A FACTOR, PROTECTIVE EQUIPMENT NOT A FACTOR.