EE WAS WORKING ON A FOOT SHAFT WHILE THE MINER WAS DOWN. HE WAS UNDER THE HEAD ABOUT 3:00 A.M. WHEN HIS LOWER BACK BEGAN TO TIGHTEN UP. HE CONTINUED TO WORK UNTIL IT WAS UNBEARABLE AROUND 5 A. M. HE LEFT THE JOB WITHOUT FILLING OUT AN ACCIDENT REPORT. AFTER TALKING TO HIS CREW THERE WAS NO INCIDENT LEADING TO THIS SITUATION.