Ключевые слова: active, alarm, alert, atom, atomic, attention, badge, biohazard, caution, chemical, chemical weapon, chemistry, danger, dangerous, death valley, design, dirty, energy, graphic, hazard, hazardous, icon, illustration, industrial, industry, isolated, nuclear, plutonium, poison, pollution, power, protection, radiation, radioactive, radioactivity, ray, reactor, research, risk, safety, science, sign, symbol of radioactive, toxic, uranium, warning sign, waste, yellow,