EE WAS OPERATING A ROOF BOLTING MACHINE INSTALLIG SCREEN ON THE MINE ROOF. WHILE PUTTING SCREEN UP AGAINST THE MINE ROOF FOR BOLTING, HE FELT PAIN N SHOULDER. NO DAMAGE OR IMPAIRMENT OCCURRED TO THE MINING OPERATION. THE INJURY DID NOT INVOLVE COMPLIANCE, JOB SKILLS, PROFICIENCY, TRAINING, ATTITUDE, PROTECTIVE ITEMS, OR PROTECTIVE DEVICES.