Ammonia leaks at La Quesera Mexicana, a Greeneville, Tenn., cheese factory, sent 29 to local hospitals on Dec. 20. Separate leaks were reported at 7:15 a.m., and again at 10:01 a.m. Some 53 other employees were evaluated onsite. Another ammonia leak with no injuries occurred at the facility earlier this year, according to the Greeneville Sun.
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