Ключевые слова: blue, bore, boring, closeup, construction, construction site, deep, dig, drill, drilling, drilling rig, earth, earthwork, energy, engineering, equipment, exploration, field, gas, geology, ground, hard work, heavy, hole, industrial, industry, machine, machinery, mechanical, minerals, mining, natural, nature, north, oil, outdoors, power, rig, site, sky, soil, subsoil, technology, vertical, water, well, work,