Ключевые слова: aerial, background, carrier, coal, construction, dig, dirt, earth, energy, engineering, environment, equipment, excavator, extraction, factory, field, fossil, fuel, geology, grab, industry, land, landscape, load, machine, machinery, machines, mineral, mining, mountain, national, natural, nature, ore, park, power, production, quarry, raw, resource, rock, sand, soil, stone, surface, technology, transport, transportation, valley, work,