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RE: Earthship Biotecture 101: Learn with Michael Reynolds: Part 1
I worked for this dude in the early 90s like 91 till 93. There are some really cool things about earthships but last I checked they still use a lot of concrete in those can walls.
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Yep, mike does but its not necessary,
It is a personal choice.. u can use alternatives such as at earthship sheppey in the uk.. they used limestone and cob almost exclusively...