EE WAS ON THE LONGWALL FACE ATTEMPTING TO DISLODGE A ROCK FROM UNDER FRONT OF A LONGWALL SHIELD. HE FELT A PAIN IN HIS BACK. WHEN HE TRIED TO LIFT THE STONE. IMPROPER LIFTING TECHNIQUES MAY HA VE BEEN A FACTOR. THERE WAS NO DAMAGE OR IMPAIRMENT TO THE MINING OPERATION OR EQUIPMENT. THE INJURY DIDN'T INVOLVE COMPLIANCE, JOB SKILLS, PROFICIENCY, TRAINING, ATTITUDE OR SAFETY ITEMS.