Ключевые слова: abandoned, alert, atom, atomic, attention, background, black, building, caution, chemistry, contamination, danger, dangerous, design, dirty, disaster, energy, environment, hazard, hazardous, icon, industry, label, material, nuclear, paper, plant, plutonium, pollution, power, protection, radiation, radiation sign, radioactive, radioactivity, reactor, reminder, risk, safety, science, sign, symbol, toxic, triangle, uranium, warning, waste, white, yellow,