Good Question: Will Earth run out of salt?

Lexington has 8800 tons of salt stored, and that’s just in Lexington, not counting other towns in Kentucky. Where does all this salt come from, and how much is remaining since this salt collection has been going on for decades? Is salt still being produced in the earth? How long will the salt supply last at these rates?

The road salt used to clear snow and ice is essentially the same as table salt; both can come from mines.

Table salt is more refined and may have some additives, but both are sodium chloride.

The salt that is spread on roads in America is primarily mined in the U.S. We also import a decent amount from Canada and Chile.

American Mine Services says the largest salt mine in the world is in Ontario, Canada.

The salt in these mines comes from leftover deposits from oceans that once covered the land but have since evaporated.

The deposits are massive.

Scientists say that while an individual mine might eventually run out because of the abundance of those mines and the amount of salt in the ocean, there is no fear that humans will eventually run out of salt.