CLEARLY BY EVIDENCE AT THE SCENE, EE ELECTED TO MOVE A GUARD & GRAB A PIECE OF OLD BELT NEARBY & MOUNT IT ON THE MOVING BELT CONVEYOR TO PUT EXCESS SAND BACK ON THE CONVEYOR RATHER THAN HAVING IT FALL TO THE GROUND WHERE HE WOULD HAVE TO SHOVEL IT. THE BELT GOT CAUGHT UP IN THE ROLLER & BEFORE HE COULD GET HIS HAND OUT HE GOT CAUGHT IN THE ROLLER THEN REACHED WITH THE OTHER HAND.