4 ms·

The largest salt mine in the world is under Lake Huron: https://www.compassminerals.com/who-we-are/locations/goderich-ontario/ https://www.compassminerals.com/w

• bregma 6mo ago
  Sure. The largest is under Lake Huron. One of the largest is under Lake Erie. And they're both in the same massive salt formation. The same massive formation is also deep under Chicago, but too deep to mine practically. When I say massive, I am being conservative.
  • IAmBroom 6mo ago
    FTFA: "decades of supply", just under Erie. Wow.