Ключевые слова: background, barrel, barrels, blue, business, cargo, chemical, container, crude, danger, diesel, drum, dump, ecology, energy, environment, environmental, equipment, factory, fuel, gallon, garbage, gas, gasoline, hazard, hazardous, industrial, industry, liquid, metal, object, oil, old, outdoors, petrol, petroleum, poison, pollution, radioactive, red, safety, stacked, steel, storage, symbol, tank, toxic, urban, warehouse, waste,