Wyoming's congressional delegation joined together in September in calling on the Obama Administration to use upcoming trade talks with China to address the soda ash "overcapacity issue," which the lawmakers say has hurt the state's ability to export its own soda ash production. Wyoming is by far the top source and exporter of soda ash in the United States — producing an estimated 90 percent of the nation's annual output— and it plays a key part of the state's economy. And especially so in Sweetwater County — known as the "Soda Ash Capital of the World — where the Green River Formation holds the world's single-largest deposit of trona, natural soda ash's source mineral.
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