Small spills of liquid nitrogen, if not trapped against the skin, will usually evaporate without causing damage. Feet Wear closed-toe shoes that cover the top of the foot or boots with trouser legs extended over the top of the boot. Ears Ear plugs or earmuffs may be required where excessive noise levels occur near filling and venting operations. The most likely cause of frostbite to the hands and body is contact with cold metal surfaces. Frostbite can be instantaneous if the skin is moist.
Immediate treatment is vital.
Calm the victim and avoid aggravating the injury. People with frostbitten feet should not walk on them. Do not rub or massage the affected parts of the body. If the eyes are affected, flush them with water for least 15 minutes. Always seek medical attention for frostbite injuries.