Ключевые слова: abstract, arctic, background, bore, bored, boring, bulldozer, car, closeup, construction, deep, dig, drill, drilling, earth, energy, engineering, equipment, excavator, field, fuel, gas, geology, ground, hole, industrial, industry, machine, machinery, man, mine, minerals, mining, natural, nature, north, oil, outdoors, pattern, pit, power, rig, shovel, sky, soil, technology, wall, water, well, work,