Treatment of materials, and more particularly ores, common metals and alloys thereof; metal treatment and processing, including tempering, finishing, casting, soldering, chromium plating, nickel plating, tin plating, galvanizing, laminating, armor plating, cutting, polishing, magnetizing, plating, punching, stripping, welding, recycling; treatment of materials during the manufacturing process for metal products, including forging, pressing, deburring, machining, laminating, shaping metals, ni...