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Keywords:America, Bethlehem Steel, Bethlehem Steel Corporation, HMT, Industrial, Machinery, PA, Pennsylvania, Spring, Steel Stacks, The Hoover Mason Trestle, United States, abandoned, aerial, blast, bolts, colors, dramatic, drone, drone view, equipment, evening, furnaces, gear, gears, historic, iconic, illuminated, industry, landmark, light, lit, manufacture, manufacturing, mechanical, nuts, oxidation, oxidized, pano, panorama, panoramic, rust, rusted, rusty, seasons, sky, stack, stacks, steel, tanks, upper, vintage
