Trump Says America Needs Nothing From Canada. He Forgot Whose Salt Keeps His Roads Safe.

By The Decision Room

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Seven million tons. That's roughly how much salt comes out of a single mine every year — from a labyrinth carved nearly two miles out under a Canadian lake. And it's the most invisible dependency in North America. Every winter, the ice on the roads you drive — your commute, your kid's school bus route — is held back by one humble mineral: rock salt. And the single largest source of it on Earth isn't in the United States. It sits 1,800 feet beneath Lake Huron, in Goderich, Ontario — the largest underground salt mine in the world, as deep below the lake as the CN Tower is tall. About 90% of what it digs up gets scattered across the winter roads of Ontario, Quebec, and the northern U.S. The salt rides giant lake freighters across the Great Lakes — "from Montreal to Duluth" — through the same Seaway shipping system Canada already sits astride. And we've seen what happens when it stops: when Goderich workers went on strike in 2018, salt shortages rippled across the whole industry. This i

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