EE WAS STANDING IN FRONT OF A SHIELD THAT LOST SHIELD PRESSURE AND THEY WERE TRYING TO GET THE PRIME BACK. CO-WORKER MOVED BACK ONE SHIELD AND SET THE PRIME CONTROL THE SHIELD THAT EE WAS STANDING IN FRONT OF MOVED AND WENT AGAINST FOOT. CAUSE WAS SAFETY AWARENESS, COMPLIANCE WITH RULES/REGS WAS NOT A FACTOR, MINER KNOWLEDGE COULD BE A FACTOR, MINING EQUIPMENT/SYSTEMS A FACTOR.