Interesting
At World’s End: 25 Post-Apocalyptic Visions.
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Your Survival is Our Obsession - Dedicated to Emergency Preparedness, Survivalism and Self-Reliance. |
At World’s End: 25 Post-Apocalyptic Visions.
If you enjoyed this post, make sure you sign up for free updates.Related posts:
My name is M.D. Creekmore and I write The Survivalist Blog to help others prepare for an uncertain future.
August 26th, 2010 at 12:25 PM
[...] An interesting, albeit more primitive option, is to build a BioSand Filter. They’re not perfect, but they are so rugged and easy to build and maintain that they are worth some consideration. They remove around 95% – 99% of all organic contaminants by way of an active “biological layer” and simple sand filtration. [...]