Ключевые слова: black, block, blue, brown, closeup, company, construction, engine, equipment, gear, grain, gravel, gray, green, grinder, heavy, huddle, industrial, industry, limestone, low angle shot, machine, machinery, mash, metal, mine, mortar, nature, normal angle, orange, pit, plant, power, purple, quarry, red, rock, rust, rusty, sand, silos, sky, steam, steel, stock, stone, tape, technology, tool, tractor, train, wheel, white, work, yellow,