gypsum board

Permaculture West permawest at
Sun Sep 28 12:02:38 EDT 1997

	I've heard of gardeners using scrap gypsum board from construction sites
in their gardens to provide essential calcium (gypsum being calcium
sulphate).  I was wondering if gypsum board is comprised of anything other
than calcium sulphate (i.e. glues, dyes, binding agents, any other
potential toxins, etc.).

 permawest at

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