EMPLOYEE STATED HE HAD TRAMMED THE 488 SCOOP HE WAS OPERATING THROUGH A CROSS CUT & RAN OVER A PILE OF LOOSE COAL THAT WAS LEFT BY THE CONTINUOUS MINER. IN DOING SO THIS CAUSED HIM TO JARR HIS LOW BACK, HE THEN STOPPED HIS MACHINE & BEGAN TO ROCK DUST THE AREA. AS HE REACHED FOR A 50 LB. BAG OF DUST HE FELT MORE PAIN IN HIS LOW BACK. EE STOPPED WORKING & WAS BROUGHT TO SURFACE.