What were the years of operation of the mine that a novel group of acidophilic archaea found at?
Iron Mountain Mine Iron Mountain Mine, also known as the Richmond Mine at Iron Mountain, is a mine near Redding in Northern California, US. Geologically classified as a "massive sulfide ore deposit", the site was mined for iron, silver, gold, copper, zinc and pyrite intermittently from the 1860s until 1963. The mine is the source of extremely acidic mine drainage which also contains large amounts of zinc, copper and cadmium. One of America's most toxic waste sites, it has been listed as a federal Superfund site since 1983.
Batesville mine The Batesville mine is a mine located in the east of the United States in Arkansas. Batesville represents one of the largest manganese reserve in the United States having estimated reserves of 178 million tonnes of manganese ore grading 4% manganese metal.