Machine shop: tools, dies, jigs, fixtures, structural steel & metal fabricating, general machining, welding, lathe & mill work Lead, Tin, Indium, Palladium, Zinc, Slag or ash, Natural graphite, Steel, Aluminum, Nickel, Bismuth, Antimony, Cadmium, Non ferrous alloy, Ferrous alloy, Iron, Shot peen machine, Robot machines, Ram electro discharge machines