Ключевые слова: alert, atom, atomic, atomic energy, attention, background, badge, black, caution, contaminated, contamination, danger, dangerous, derelict building, design, dirty, disaster, energy, hazard, hazardous, icon, illustration, industrial, ionizing, ionizing radiation, nuclear, nuclear energy, old, plutonium, pollution, power, protection, radiation, radioactive, radioactive symbol, radioactivity, ray, reactor, research, risk, safety, science, sign, star, symbol, threat, uranium, warning, yellow,