Ключевые слова: basin, black, bohemia, brown, brownfield, coal, construction, crane, czech, digging, dirt, dirty, energy, engineering, environment, equipment, excavator, extraction, field, fossil, heat, heavy, huge, industrial, industry, large, machine, machinery, mine, miner, mining, mining machine, most, mostecka, mus, nature, panev, power, production, rock, sky, technology, uhelna, vehicle, work,