Ключевые слова: accident, assistance, chemical, chemistry, crisis, damage, delivering, dirty, disaster, ecology, emergency, employee, engineering, environmental, factory, females, friend, gas, hazardous, health, helmet, help, industrial, injury, insurance, job, laboratory, leak, liquid, mask, occupation, oil, pain, person, petroleum, poison, pollution, prevention, protection, radiation, rescue, risk, safety, scientist, serious, spill, substance, toxic, warehouse, working,