ONE WORKER WAS ON THE GROUND MOVING TWO CONVEYERS BACK INTO POSITION WITH THE ASSISTANCE OF ANOTHER WORKER OPERATING A 972G LOADER WITH A CHAIN CONNECTED TO THE CONVEYERS. WHEN THE GROUND WORK ER WENT BETWEEN THE CONVEYERS TO LOWER BIN, THE LOADER OPERATOR THOUGHT HE WAS OUT OF THE WAY AND PROCEEDED TO MOVE THE CONVEYERS INTO POSITION, PINNING LEG BETWEEN CONVEYERS.