Mine Survival, Inc.
Mine Survival, Inc. (MSI) is the premier manufacturer of cutting edge surface rebreathers. Our rebreathers are smaller, lighter weight and are used as Self Escape Respirators, High Rise Escape Breathing Devices, and HazMat escape respirators. We have also developed the world's most advanced breathing simulator.
We've taken a very complex device, simplified it, made it lighter and easier to breathe.
- David E. Cowgill, Inventor Survivor Vest Rebreather