The document outlines various self-contained breathing apparatus technologies, including: 1. Self-contained self-rescuers (SCSRs) that provide oxygen on demand and can dock to other air supplies for extended use. 2. A new carbon dioxide scrubber that is more efficient and a breathing air monitor system to detect oxygen and carbon monoxide levels. 3. Potential additions like a combined self-rescuer and carbon monoxide filter, miner communications capabilities, and a rebreather for surface use by first responders. The presentation solicits feedback on user needs and explores concepts like scalable duration units and selectable protection levels. A demonstration of an SCSR system is also