The main purpose of self rescuer is to enable the wearer to escape through an atmosphere resulting after a . . . . . . . . or after an . . . . . . . . in a mine.

Answer: Option A

A self-rescuer is a personal protective device used in underground mines to protect miners from toxic gases, especially carbon monoxide (CO), during emergencies.

The main purpose of a self-rescuer is to enable the wearer to safely escape from an area affected by hazardous atmospheres resulting from a fire or an explosion.

These incidents commonly release carbon monoxide and other harmful gases, which are life-threatening without respiratory protection.

Self-rescuers function by either filtering toxic gases (chemical-based) or providing a small oxygen supply (oxygen-based) for short durations, allowing enough time to evacuate.

Therefore, the correct answer is: Fire, Explosion