Hecla Mining is a silver and other precious metals mining company based in Coeur d'Alene, Idaho. Founded in 1891, Hecla Mining was prominent in what became known as the Silver Valley of Idaho, which had the second-largest deposits of silver in the country. In 1983 this area was designated as a Superfund site by the Environmental Protection Agency, because of land, water and air contamination resulting from a century of mostly unregulated mining. In June 2011 Hecla Mining settled an environmental suit under the Superfund statute, filed under CERCLA in 1991 by the Coeur d'Alene Tribe, which was later entered by the United States and the state of Idaho. Under the settlement agreement, Hecla Mining will pay $263.4 million plus interest to the plaintiffs In January 2017 Hecla Mining reported full year 2016 production totaling 17.2 million ounces of silver and 233,929 ounces of gold.