Ключевые слова: african, black, blue, brown, building, climate change, coal, commodity, conveyor belt, copper, dirty, equipment, excavate, excavator, frame, gear, global warming, gold, head, headgear, hoist, industrial, industry, iron, metal, mine, mining industry, ore, platinum, platinum ore, purple, rays, rocks, shaft, silhouette, silo, silver, sky, steel, storage, structure, sunrise, sunset, tower, track, transport, work, yellow,