ElleHopper t1_j11pput wrote
Reply to comment by sjk8990 in TIL that the USA uses 10x as much salt on the road than they do in processed foods, and was first introduced on the roads in New Hampshire. by madmansmarker
The EPAs website says that NaCl is most commonly used as rock salt, MgCl2 is less efficient so is typically not used, and CaCl2 is used only in vulnerable areas due to the expense of it.
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