What is a "breathing apparatus" used for in mine rescue?

A breathing apparatus is crucial in mine rescue operations primarily because it provides breathable air in environments where the oxygen levels are insufficient for safe human breathing. In the event of a mine incident—such as a fire, explosion, or other hazardous situations—there may be a rapid depletion of oxygen or an increase in harmful gases. The use of a breathing apparatus allows rescuers to enter these dangerous environments safely by supplying a controlled flow of clean, breathable air, thus ensuring their safety while they work to evacuate trapped individuals or assess the situation.

The focus of the breathing apparatus is strictly on addressing life-threatening issues related to air quality, making it indispensable during emergencies. Its primary function is distinct from options related to communication, protection from physical hazards, or air quality monitoring, which are important in their own right but do not directly serve the life-sustaining purpose of providing breathable air in an emergency setting.