Bunker in Texas (Pictures!)

[Dr_Fwd]

Giant coffin! All it takes is just close the ventilation pipe...

[KevDen2005]

Giant coffin! All it takes is just close the ventilation pipe...

I was thinking this also, so how should it be done to prevent that?

[blacklabel]

I was thinking this also, so how should it be done to prevent that?

Redundancy I suppose.

[ccrain]

Active defense, putting a little pill box on top of your bunker, or on top of the escape hatch several hundred feet away (shades of Hogan's Heroes tree stump) for an air vent is one way, another way is a reverse leach field concept. Using standard perforated plastic pipe buried about 3-4" under 2"+ rock in a plenum type arrangement, you can draw air in and no one would know it. Then you can force air out through the vent pipe or front door or through the actual sewer leach field.

It still doesn't stop some one from using Chlorine gas on your whole setup and contaminating any filtering you have, which is why active defense is probably the best way to do it.