Ключевые слова: boom, coal, coalfield, crucible, digging, drilling, dynamite, engine, excavation, exploitation, explosion, extracting, extraction, ferrous, fossil, geology, heavy, illustration, industrial, industry, iron, landscape, machine, manufacturing, metal, metallurgy, methane, mine, mineral, mining, opencast, ore, pit, plant, pollution, power, production, quarry, quarrying, resource, rock, smoke, stone, technology, transport, underground, vehicle,