34 ELECTRIC-DISCHARGE MACHINING ELECTRODES; GRAPHITE ELECTRODES FOR ELECTROLYTIC AND ELECTROTHERMIC APPLICATIONS; CRUCIBLES, BOATS, TRAYS, JIGS AND MOLDS FOR USE IN FURNACES; FUEL CELL ELECTRODES AND STRUCTURAL PLATES, FUEL ELEMENTS, MODERATORS, REFLECTORS, CONTROL RODS, THERMAL COLUMNS AND SHIELDING FOR NUCLEAR REACTORS; AND HEATING ELEMENTS