Ключевые слова: bench, big, blasting, cement, concrete, construction, earth, ecology, environment, equipment, excavate, excavation, excavator, geology, gravel, heap, heavy, industrial, industry, landscape, large, limestone, machine, machinery, material, mine, mineral, mining, mountain, nature, open, ore, outdoor, pile, pit, plant, pollution, production, quarry, raw, resource, rock, site, sky, stone, surface, technology, transportation, white, work,