Ключевые слова: archaeology, biggest, building, bulldozer, colors, concrete, cone, construction, crater, diamond, dig, digging, earth, ecology, engineering, environment, equipment, excavation, excavator, feature, gem, geological, geology, gravel, heap, heavy, hole, industrial, industry, large, machine, machinery, metal, mine, mineral, mover, nature, ore, pit, power, quarry, rock, stone, technology, transport, transportation, truck, vehicle, work, yellow,