Mine Survival, Inc. (MSI) is the premier manufacturer of the world’s most advanced breathing simulator and cutting edge surface and underground re-breather systems for self-escape, high rise breathing and rescue missions. MSI’s re-breathers are built with one purpose…to get the stranded miner home. They are the longest-lasting SCSR available, and the only one providing voice communications that will not expose the user to a hazardous environment. MSI has also developed the world’s most advanced breathing simulator.
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