Oklahoma also has well brines that produce iodine. Iodine is used in inks and dyes, as an antiseptic, in photography, and in animal feeds.
Iodine tablets help sterilize drinking water.
Iodine's use as a dietary requirement has long been established. Without it the cell growth in anmals and humans would be impeded. Large concetrations of iodine are found in the thyroid gland. Goiter and other glandular disturgances are associated with low iodine diets. Many inland areas of the United States do not contain enough iodine in their soils to provide produce or meat with an adequate minimal intake of this element.