Pythias
Jedi Knight
Offline
I had no idea they used ANYTHING in Washington State besides sand and gravel to throw onto the snow/ice. If they're using a melter it's most likely Calcium Carbonate ... (at least i think thats the stuff I sometimes see bags of for snow melting.. but again I didn't know that state used anything ever... !??) Oh look here.. (https://chemistry.about.com/cs/howthingswork/a/aa120703a.htm)