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["Wendy" <crazygardens AT verizon.net>]

Before you crush any wallboard up for your gardens, be very sure it is 
natural gypsum and not synthetic gypsum.  Synthetic gypsum is a byproduct of 
the flue-gas desulfurization process used at coal-fired power plants. 
Synthetic gypsum contains not only the sulfur that was removed but also any 
other heavy metals and impurities that were in the coal and not combusted. 
I wouldn't put this stuff anywhere near my garden and question the wisdom of 
even building houses with it.

Wendy


> Not sure if this is an answerable question or not!!
> I've asked before and appreciated the information that old wall board 
> would make a good soil amendment.. not sure how you would use that? 
> Broken up and spread with a spreader?  could just be placed out on ground 
> or put into compost?  Would you only place on clay like soils?  Would it 
> be a detriment to organic soils?
> We have quite a bit of material from a demolition project.  Trying to 
> decide if we should haul out to land or pay environmental services to 
> dump.  We are now calculating costs of gasoline, small trailer 10 mile 
> round trip,  vs. dumpster fees etc.  don't think it will pay us to create 
> our own private landfill but if material can benefit land it might pay. 
> Question came up because environmental service doesn't have a dumpster 
> available for couple weeks.
> Van Dell
>
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