calsfoundation@cals.org
October 8, 1941
The U.S. Department of War informed Representative Oren Harris of Arkansas of the approval for a $23 million ammonia plant to be located near El Dorado (Union County). One of six such ordnance plants in Arkansas during the World War II years, it became known as the Ozark Ordnance Works and was the first plant in the United States to use natural gas to produce ammonia.