Ключевые слова: abstract, arctic, background, bore, bored, bulldozer, car, closeup, construction, deep, dig, drill, drilling, dry, earth, earthwork, energy, engineering, equipment, excavation, excavator, field, gasoline, geology, geotechnical, ground, hard, hole, industrial, industry, machine, machinery, metal, mine, minerals, mining, natural, nature, oil, outdoors, pattern, power, rig, site, soil, technology, truck, water, well, work,