Ключевые слова: architecture, art, black, building, chimney, clip, collection, concrete, construction, contamination, crane, dirty, electricity, energy, environment, factory, graphic, hazardous, holding, icon, illustration, industrial, industry, internet, isolated, large, nuclear, oil, outline, place, plant, pollution, power, refinery, set, silhouette, site, smoke, smokestack, station, structure, symbol, tank, web, white, working,