EE STRAINED HIS BACK WHILE ATTEMPTING TO LIFT A SECTION OF TOP BELT 54"" WITH HIS BACK. CAUSE OF THIS INJURY WAS IMPROPER LIFTING, NOT USING MECHANICAL DEVICES. COMPLAINANCE WITH RULES/REGS WAS A FACTOR, PROTECTIVE EQUIP. WAS NOT A FACTOR, MINER PROFICIENCEY A FACTOR, MINING EQUIP0M/SYSTEMS NOT A FACTOR.