Ключевые слова: activity, aggregate, big, bulldozer, coal, construction, conveyor, crane, digging, drilling, earth, environment, equipment, excavator, exploration, extraction, extreme, geology, global, granite, gravel, grunge, heavy, huge, industrial, industry, large, limestone, loading, machine, machinery, mine, mineral, moving, ore, power, quarrying, rock, steel, stone, technology, tool, transport, transportation, truck, vehicle, work,