QUARRY CLEANUP AND LUBEMAN, EE WAS CLEANING OFF DRY STONE FINES OFF THE TERTIARY CRUSHER LOWER STAIRWAY. HE WAS FACING THE UP DIRECTION BRUSHING OFF THE 8TH STEP FROM THE BOTTOM, WHEN HE BEGAN TO STEP BACK AND HE CAUGHT THE HANDRAIL SUPPORT STEEL WITH HIS RIGHT FOOT CAUSING HIM TO LOSS BALANCE AND FALL. HE CONTINUED WORKING UNTIL 7-29-03, WHEN PT AND RESTRICTIONS BECAME NECESSARY F