Ключевые слова: aerial, building, business, construction, conveyor, design, development, dig, energy, environment, equipment, extraction, factory, fort, gravel, ground, industrial, industry, iron, land, landscape, machine, machinery, manufacturing, metal, mine, mineral, minerals, mining, natural, oil, outside, pit, plant, power, quarry, sand, sands, sky, technology, transportation, up, view, work,