The danger of radioactive contamination in karst caves is associated primarily with natural, radioactive inert gas, radon. This colorless, odorless gas is 7.5 times heavier than air and…
Survival Tips, Prepper Guides, Gear Reviews
The danger of radioactive contamination in karst caves is associated primarily with natural, radioactive inert gas, radon. This colorless, odorless gas is 7.5 times heavier than air and…