Welcome to the ETI Library

Check out our new book Outdoor Survival Guide written by Randy Gerke and illustrated by Kay Gerke, the founders of Enviro-Tech International. Click here to learn more.
Our library contains articles and information on a variety of subjects related to wilderness survival and safety issues. This collection of material will be growing continually. We plan to add new information on a regular basis. If you have suggestions for articles or information you would like see included, please let us know.

When Storms Rage Or how to build a snow cave.
This article contains useful information and pictures about how to construct a snow cave.

Hypothermia-The Big Chill
An article describing the causes, effects and treatment for hypothermia.

Hypothermia-A Close Call in Colorado
The author's personal battle with hypothermia during an experience in the canyons of western Colorado.











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