GERLACH, Nev. (AP) -- Two tiny northern Nevada towns near the site of the annual Burning Man festival are facing an uncertain future when the largest regional employer closes early next year. Citing a sluggish construction market, USG Corp. announced Thursday that it will halt its gypsum mine and wallboard manufacturing operations in the company-owned town of Empire on Jan. 31. http://finance.yahoo.com/news/Towns-near-Burning-Man-site-apf-3867215882.html?x=0&.v=4