Kemmerer coal mine set to close in 2029, spurring Wyoming’s soda ash industry to seek new fuel source

The state’s $1.3 billion trona mining and soda ash industry relies on the Kemmerer coal mine to fire boilers and generate electricity.

Posted 10/29/26

After years of speculation and rumor, the Kemmerer coal mine in southwest Wyoming is set to close at the end of 2029, officials say.

At least that’s the plan for now.

“It’s a dynamic …

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