Ключевые слова: background, bore, boring, car, closeup, construction, deep, drill, dry, earth, earthwork, energy, engineering, equipment, excavation, exploration, field, fuel, gasoline, geology, geotechnical, geothermal, ground, hard, hole, industrial, industry, machine, machinery, man, mechanical, metal, mine, minerals, natural, nature, north, pit, power, rig, shovel, site, sky, soil, technology, truck, wall, water, well, work,