Manufactures roofing materials; manufactures extruded aluminum products; manufactures asphalt paving mixtures & blocks Steel, Nickel, Bismuth, Antimony, Cadmium, Non ferrous alloy, Ferrous alloy, Iron, Lead, Tin, Indium, Palladium, Zinc, Slag or ash, Natural graphite, Aluminum, Roads and landscape, Bituminous derivatives, Roofing tiles, Shakes, Shingles, Trusses, Slate roofing