Ключевые слова: belt, business, coal, colorful, commodities, conveyor, dawn, dramatic, dusk, energy, engineering, environment, equipment, evening, extraction, geology, heavy industry, industrial, industry, infrastructure, lab, landscape, machinery, metal, mine, mineral, mining, mountain, nature, no people, open pit, ore, outdoors, power, production, quarry, raw material, resource, scenic, sunset, supply chain, technology, transport, transportation, work,