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Kern, don't know when youKern, don't know when you posted, this date is 8/2013, I am digging mine by pick and shovel(8' x 20' x 12")(2 rooms) Location is Phoenix AZ! Please read different sites for information, stay away from trees(roots), provide ventilation, use wooden shelves. I am layering concrete texture on outside of walls and the dirt on the outside of walls is going to be mixed with cement to create a moisture barrier. I am building a shed on top of the first room and the second room is going to have a wood deck over it! Entry door is going to be in work cabinet to provide shade and security.

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