фильтрующий самоспасатель(Filter self-rescuers (FSR) are air purifying respirators developed to aid an efficient, safe escape from dangerous underground mining conditions. They provide protection against carbon monoxide and other such hazardous gases emitted as a result of mine fires and firedamp explosions which at certain levels, can lead to disorientation, unconsciousness and even fatality when inhaled.: Filter self-rescuers work by taking the carbon monoxide (CO) from the user’s ambient surroundings following a fire or an explosion and converting the toxic gas into breathable carbon dioxide.)
