Salt manufacturing has long been a source of curiosity for many interested in southwest Arkansas' earliest days. It is not known precisely when Indians first began extracting the mineral from the earth near the Ouachita River in Clark County, but it was certainly prior to the arrival of the first European explorers. Because of its lengthy historical significance, one site, Bayou Sel, was added to the National Register of Historical Places in 1974.
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Richter, Wendy Bradley, "Salt manufacturing: One of county's earliest industries" (2016). Articles. 169.