The manufacture of heavy chemicals such as but not limited to acids or other corrosives, ammonia, caustic soda and sulfuric acid; the manufacture of basic or semifinished chemicals such as cellulose products, resins, dye stuffs, glue, vegetable, animal or mineral fats or oils, explosives, combustible gases, soaps and detergents, fertilizers, asphalt and tar products; the manufacture or production of metals and alloys in ingot form; the manufacture or production of cement, plaster, cork and their constituents, matches, paints, rubber and rubber products.