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2. Gold mining in Colorado - Wikipedia

   en.wikipedia.org/wiki/Gold_mining_in_Colorado

   The Cripple Creek & Victor Gold Mining Company began the first large-scale open pit mining in the district in 1994. [28] The Cresson mine open pits are located a few miles north of Victor. Mining continues today under the ownership of Newmont Corporation , which boosted gold production from 211,000 troy ounces (6.6 t) in 2014 to 451,000 troy ...

3. Cripple Creek & Victor Gold Mine - Wikipedia

   en.wikipedia.org/wiki/Cripple_Creek_&_Victor_Gold...

   The Cripple Creek & Victor Gold Mine, formerly and historically the Cresson Mine, is an active gold mine located near the town of Victor, in the Cripple Creek mining district in the US state of Colorado. The richest gold mine in Colorado history, [1] it is the only remaining significant producer of gold in the state, and produced 322,000 troy ...

4. Timeline of mining in Colorado - Wikipedia

   en.wikipedia.org/wiki/Timeline_of_mining_in_Colorado

   Summit County is Colorado's top placer gold producer, most of it coming from the southern Tenmile and Breckenridge districts. [73] [91] 1859-07 gold Central City-Black Hawk On July 5, J. D. Peregrine installed the first water powered arrastra at Gregory Diggings, near Black Hawk. [92] [93] 1859-05 gold Central City

5. Mollie Kathleen Gold Mine - Wikipedia

   en.wikipedia.org/wiki/Mollie_Kathleen_Gold_Mine

   The Mollie Kathleen Gold Mine is a historic vertical shaft mine near Cripple Creek, Colorado, United States. [1] The mine shaft descends 1,000 feet (300 m) into the mountain, a depth roughly equal to the height of the Empire State Building in New York City. [2] The mine currently gives tours, [3] and is visited by around 40,000 people annually. [4]

6. Colorado investigators blame 'operator error' in deadly 2024 ...

   www.aol.com/news/colorado-investigators-blame...

   Investigators determined that the incident at the Colorado tourist mine was "not attributed to current mine practices or equipment malfunctions." Colorado investigators blame 'operator error' in ...

7. Tour guide killed after elevator malfunctions underground in ...

   www.aol.com/multiple-people-trapped-underground...

   A tour guide died at a Colorado gold mine after an elevator experienced a mechanical issue hundreds of feet below ground, trapping a dozen tourists for several hours, authorities said. The ...

8. Underground hard-rock mining - Wikipedia

   en.wikipedia.org/wiki/Underground_hard-rock_mining

   There are two principal phases of underground mining: development mining and production mining. Development mining is composed of excavation almost entirely in (non-valuable) waste rock in order to gain access to the orebody. There are six steps in development mining: remove previously blasted material (muck out round), scaling (removing any unstable slabs of rock hanging from the roof and ...

9. Stratton's Independence Mine and Mill - Wikipedia

   en.wikipedia.org/wiki/Stratton's_Independence...

   Stratton's Independence Mine and Mill is a historic gold mining site near Victor, Colorado on the south slope of Battle Mountain. Between late 1893 and April 1899, approximately 200,000 ounces (6200 kg) of gold was removed from the Independence Mine.