INJURED AND FELLOW EMPLOYEE INSTALLING RAPID HAUL. INJURED WAS ATTEMPTING TO LINE UP BOLT HOLES BY APPLYING DOWN PRESSURE ON SYSTEM; SCOOP LUNGED, CAUSING HIM TO TRAP HEAD BETWEEN OPERATING C OMPARTMENT OF SCOOP & TOP. NO DAMAGE TO MINING EQUIPMENT, TRAINING OR LACK OF IT, RULES/REGS OR SAFETY EQUIPMENT COULD HAVE PREVENTED THE ACCIDENT.