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  2. Gold mining in Colorado - Wikipedia

    en.wikipedia.org/wiki/Gold_mining_in_Colorado

    Gold mining in Colorado, a state of the United States, has been an industry since 1858. It also played a key role in the establishment of the state of Colorado . Explorer Zebulon Pike heard a report of gold in South Park , present-day Park County, Colorado , in 1807.

  3. Timeline of mining in Colorado - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_mining_in_Colorado

    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

  4. Category:Gold mines in Colorado - Wikipedia

    en.wikipedia.org/.../Category:Gold_mines_in_Colorado

    Map all coordinates using OpenStreetMap. Download coordinates as: KML; ... Pages in category "Gold mines in Colorado" The following 11 pages are in this category, out ...

  5. List of copper mines in the United States - Wikipedia

    en.wikipedia.org/wiki/List_of_copper_mines_in...

    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 ...

  6. Leadville mining district - Wikipedia

    en.wikipedia.org/wiki/Leadville_mining_district

    Oro City, an early Colorado gold placer mining town located about a mile east of Leadville in California Gulch, was the location to one of the richest placer gold strikes in Colorado, with estimated gold production of 120,000–150,000 ozt (8,200–10,300 lb; 3,700–4,700 kg), worth $2.5 to $3 million at the then-price [clarification needed ...

  7. Tour guide identified as victim who died in Colorado gold ...

    www.aol.com/tour-guide-identified-victim-died...

    At around noon, the elevator at the gold mine near the town of Cripple Creek experienced mechanical issues that "created a severe danger for the participants," Teller County Sheriff Jason Mikesell ...

  8. California Gulch - Wikipedia

    en.wikipedia.org/wiki/California_Gulch

    Mining in the Leadville area began in 1859 when prospectors working in the channels of the Arkansas River tributaries discovered gold at the mouth of California Gulch. In April 1860, one of the richest discoveries of placer gold in Colorado was discovered at California Gulch. [2]

  9. Geography of Colorado - Wikipedia

    en.wikipedia.org/wiki/Geography_of_Colorado

    Colorado, Wyoming, and Utah are the only states that have their borders defined solely by straight boundary lines with no natural features. [4] The southwest corner of Colorado is the Four Corners Monument at 36°59'56"N, 109°2'43"W. [5] [6] This is the only place in the United States where four states meet: Colorado, New Mexico, Arizona, and ...