Here in VA they use 2 types of salt. The regular stuff that to help the roads clear when the roads are bad and some liquid crap they spray on the roads before the storm hits.
Have you tried Wingfields salvage in PA. That guy gots alot old crap that he wont scrap. He also 50-60's impala collector too. Here's a another Fenches in New Market VA.
No they dont carry all that stuff. I take what can carry and if i need it i just walk back to truck to get it. Unless I go to the salvage yard in New market Virginia then I can just my truck in the yard then.