Posted by fletch on Friday, February 02, 2001 at 10:48AM :
In Reply to: Re: Road Salt posted by Matt Wilson on Thursday, February 01, 2001 at 10:21PM :
The magnesium chloride is supposed to work down to around 20 F and the calcium chloride is supposed to work down to 13F. Much below that and it is all worthless except to kill trees and rust cars.
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