Ключевые слова: barrel, barrels, black, can, chemical, chemistry, close up, container, danger, dirty, dump, ecology, empty, energy, environment, equipment, factory, freight, fuel, gallon, gallonage, garbage, gasoline, green, grunge, heavy, industrial, industry, material, metal, metallic, nature, object, oil, old, outdoor, petrol, petroleum, pollution, recycling, round, rusty, safety, steel, storage, tank, toxic, transportation, vertical, waste,