View single post by gpedens
 Posted: Wed Apr 8th, 2009 03:10 am
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Joined: Mon Feb 2nd, 2009
Location: Redneck, USA
Posts: 20
Drywall or sheet rock or other brand names is made from gypsum or calcium sulfate (CaSO4) be it made in the US, Canada, China, etc.   I wonder if they are using added fillers such as coal ash from power plants and desulfurization that contain calcium sulfide (CaS) and or calcium sulfite (CaSO3)?  Of cousre it could be it is just naturally mined that way.

Ifin you wannit dun rite do it yersef. The best way of doin sumpthin air as good as any.