Factory, Refinery, Rust, factory, factories, furnace, furnaces, historical landmark, historic, historical, industry, industrial, iron, manufacturing, metal, mill, molten, orange, plant, rust, rusty, steel, orange background, historic and vintage, historical period, historic & vintage, industrial area, manufacturing machinery, industrial areas, metal backgrounds, steel background, steel backgrounds, industrial background, metal backdrop, metal backdrops, factory chimney, iron metal, mixture, ferric oxide, enclosure, chamber, oxide, alloy, fabrication