ALLEDGED INCIDENT WAS TO HAVE OCCURRED WHILE THIS EE WAS PICKING UP A 60"" BOTTOM ROLLER. HE SAID HE FELT PAIN IN HIS LOWER BACK. CAUSE OF THIS INJURY WAS NOT ASKING FOR HELP AND IMPROPER LIFTI NG TECHNIQUE. COMPLIANCE WITH RULES/REGS NOT A FACTOR, PERSONNAL SAFETY EQUIPMENT WAS NOT A FACTOR, MINING EQUIP/SYSTEMS COULD BE A FACTOR, MINER PROFICIENCY A FACTOR.