In 2013, the bentonite industry remained unchanged from 2012, with total production and sales in the United States at 4.95 Mt (5.4 million st), versus 4.98 Mt (5.5 million st) in 2012. Swelling-bentonite production occurred with Wyoming leading production, followed by Utah, Montana, Texas, California, Oregon, Nevada and Colorado. Recovery from the United States and world recession (2007-2009) appears to be generally complete as of 2011, however housing production and related bentonite construction use is finally beginning recovery. Swelling-sodium bentonite dominated non-swelling calcium bentonite in North America (United States and Canada) with more than 97 percent of the total bentonite market. The non swelling-bentonite production occurred in Alabama, Mississippi, Arizona, California and Nevada. The major uses of non swelling bentonite were in foundry sand binder, water treatment and filtering.
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