Checkout www.romanconcrete.com and www.earth-house.com,especially the "liberty house".I have read professor p.k.mahta work with flyash and other types of ash and now know that we can build very,very long-lasting dome homes without rebar or other costly building products.Many ready-mix boys are trying to control the local market on flyash,but coal-fired plants are covered with it and many landfills are turning it away.If all coal burning was stopped today,there would be enough clean flyash around to last a long time.Build your furniture with a cement-flyash mixture.There is no need to cut another tree!
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