EE WAS STRUCK & SQUEEZED BY CANOPY OF A ROOF BOLTING MACHINE. EE WALKED ALONG THE MACHINE & SWUNG OUT THE HEAD, HIS CO-WORKER MOVED THE MACHINE & STRUCK THE VICTIM.CAUSE OF THIS INJURY WAS AWA RENESS AND COMMUNICATION BETWEEN WORKERS. COMPLIANCE WITH RULES/REGS WAS A FACTOR, MINER PROFICIENCY A FACTOR, SAFETY EQUIPMENT NOT A FACTOR, MINING EQUIPMENT/SYSTEM A FACTOR.