EE WAS WALKING TOWARD THE ELEVATOR LANDING. HE TRIPPED OVER A PIECE OF LOOSE MATERIAL ON BOTTOM AND FELL. HE STRUCK HIS RIGHT FOREARM AND ELBOW AGAINST THE BOTTOM JAMMING HIS RIGHT SHOULDER. U NEVEN MINE FLOOR CONTRIBUTED TO THE ACCIDENT. THERE WAS NO DAMAGE OR IMPAIRMENT TO THE MINING OPERATION OR EQUIPMENT. THE INJURED DID NOT INVOLVE ANY ASPECT OF COMPLIANCE, JOB SKILLS, MINER P