Explosive

The book Back to Basics by Reader's Digest, on page 123 shows a methane digester and a storage tank for methane. You have to be very careful with methane since when combined with oxygen, it can be explosive. The collector they show uses an inverted tank, open on the bottom, inside a water tank. The methane is fed in from underneath and as it displaces the water in the tank, it floats up to hold the methane. Get the book. It is full of very useful information. I highly recommend it as a general purpose reference on how to do just about anything necessary to living a "normal" life after the shift.

Offered by Michael.