On Sat, 08 Feb 2014 21:48:57 -0600, Martin Eastburn
wrote:

I watched a show on my Sat unit - the salt in the north is
different than in the south - different 'salt' not sodium-cloride
calcium..... They showed tall stacks of a brownish 'salt' (a large
family of chemicals) and stated they normally served the western states
as needed but now since the supplies were short in the East, they were
looking for rail cars to haul the salt to the East in the volume they need.

"Salt", as used on roads, in the East at least, *is* Sodium Chloride.
There are huge mines under the Great Lakes, pulling trainloads of it
out constantly. Alternative "salts" are quite expensive.

Learned there is a good ole bunch of chemical sets used.

Used, certainly, but good old "table salt" is used in vast quantities.

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