CHEYENNE, Wyo. (AP) — Wyoming officials have reached an agreement with a Navajo tribal company that would give them authority to take the company to court to enforce environmental laws at two coal mines.

Navajo Transitional Energy Company acquired the Antelope and Cordero Rojo mines in Wyoming, and the Young's Creek mine in Montana, from Gillette-based Cloud Peak Energy in a 2019 bankruptcy sale.

As a sovereign tribal entity, the Navajo company couldn't normally be sued in state court. Wyoming and Montana officials have been negotiating limited waivers of sovereign immunity for NTEC as a condition for the company to eventually get state permits for its new mines.

Negotiations between NTEC and Montana continue.

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