Ключевые слова: atomic, barrel, caution, chemical, container, contamination, danger, dangerous, disaster, drum, ecology, energy, environment, environmental, fuel, gallon, garbage, hazard, hazardous, icon, industrial, industry, isolated, liquid, material, metal, nuclear, object, oil, poison, pollution, power, protect, radiation, radioactive, radioactivity, risk, safety, sign, steel, storage, substance, symbol, tank, toxic, uranium, warning, waste, white, yellow,