What is the primary purpose of an SCSR?

The primary purpose of a Self-Contained Self-Rescuer (SCSR) is to provide oxygen to the user in environments where breathable air is not available, such as in cases of smoke, toxic gases, or low oxygen levels. SCSRs are essential safety devices used in mines and other hazardous environments to ensure that an individual can safely escape from a dangerous situation where the atmosphere is compromised.

While filtering carbon monoxide, providing fresh air, and protecting from smoke inhalation are important aspects of ensuring safety, the core function of an SCSR is to supply the user with a reliable source of oxygen. This capability enables miners and workers to breathe safely while navigating away from threats, ultimately supporting their safe evacuation during emergencies.