Ключевые слова: a pit, big, brown, coal, coal mine, digger, digging, dirt, dirty, earth, energy, engineering, environment, excavation, excavator, exploitation, extreme, fossil fuel, geology, heavy, heavy undustry, huge, industry, landscape, large, lignite, machine, machinery, manufacturing equipment, mining, mining engineering, mining operations, nature, open, open pit mine, opencast, place work, power, production, quarry, quarrying, removing, strip mine, surface,