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Only one Colorado mine continues to produce gold, the Cripple Creek & Victor Gold Mine at Victor near Colorado Springs, an open-pit heap leach operation owned by Newmont Corporation, which produced 322,000 troy ounces of gold in 2019 and reported 3.45 million troy ounces of Proven and Probable Reserves as at December 31, 2019.
The only working underground mine in Colorado in 2008 was the Cash mine, built in 1872, at Gold Hill in Boulder County. Each ton of ore yields about .75 ounce of gold at the mine, which daily extracts about 50 tons of ore. [4] 2004 nahcolite: Piceance Basin: American Soda pilot project that mined via fracturing ended after 3.75 years. [5] 2004 coal
This list of gold mines in the United States is subsidiary to the list of mines article and lists working, defunct and future mines in the country and is organised by the primary mineral output. For practical purposes stone, marble and other quarries may be included in this list.
Bingham Canyon Mine – copper mine in Salt Lake County, Utah; largest man-made excavation on Earth; more commonly known as Kennecott Copper Mine; Chino Mine – copper mine in Grant County, New Mexico; Cresson Mine – gold mine in Victor, Colorado; Fort Knox mine – gold mine in the Fairbanks mining district of Alaska
Underground mine producing nickel and copper concentrates 18 (2018) [8] 15 Phoenix Lander County, Nevada: Newmont Mining Corporation: Gold-copper ore, concentrated and leached 16 (2018) [6] 16 Lisbon Valley San Juan County, Utah: Lisbon Valley Mining Company Copper ore, open pit, heap leached 10–15 (2018) [9] 17 Miami: Gila County, Arizona ...
An incident involving an elevator at a former Colorado gold mine that led to the death of a tour guide and trapped a group of tourists for hours last year...
Standard mine: Gunnison: Surface water, groundwater and soil contamination by arsenic, lead, zinc, cadmium, copper, chromium and manganese from an isolated former mine at 11,000 ft altitude. [26] 04/27/2005: 09/14/2005 – – –
Colorado Home to the Rocky Mountains, Colorado is one of the most beautiful states in the country. It’s also home to some of the lowest property tax rates in the nation, at 0.49%.