DURING BUCKET ELEVATOR REPLACEMENT, EE WAS PUSHING A CRANE CABLE USED TO SUPPORT THE WEIGHT OF THE ELEVATOR CHAIN. THE CABLE SUPPORTING THE CHAIN WAS NOT FULLY TENSIONS. AS CHAIN CAME OFF THE SPROCKET, THE CHAIN MOVED DOWNWARD CAUSING EE TOSLIP, LOSE BALANCE AND FALL FORWARD AND CONTACT THE METAL ELEVATOR HOUSING.