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State Quarry, Iowa Men's Reformatory, Anamosa, Iowa, NRHP-listed, includes a quarry; T.J. Gipple's stone quarry, near NRHP-listed Gipple's Quarry Bridge (1893), Columbus Junction, Iowa; Old State Quarry, North Liberty, Iowa, NRHP-listed; Quarry, Iowa, site of limestone quarrying in Marshall County, Iowa. Town was laid out by Le Grand Quarry ...
New Cornelia mine – inactive copper mine near Ajo, Arizona; Ray mine – Asarco copper mine located in Pinal county, Arizona; Red Dog mine – zinc and lead mine in Red Dog Mine, Alaska; Rio Tinto Borax Mine – California's largest open-pit mine and the largest borax mine in the world; Thompson Creek mine – molybdenum mine in Custer County ...
Carbaugh Run Rhyolite Quarry Site; Centennial Beach; Civilian Conservation Corps Quarry No. 1 and Truck Trail; Civilian Conservation Corps Quarry No. 2; Clark and McCormack Quarry and House; Coldspring (company)
The United States ranks fourth, behind China, Australia and Russia. The Nevada mining industry supported an average 15,136 direct employees in 2020, with about 75,000 additional jobs related to providing goods and services needed by the mining industry. [1] [2] The following is a list of active gold mines in Nevada.
1906–Present (Open to public for small fee) [1] Commercial mining ventures failed, only diamond mine accessible to the general public. World's only perfect diamond found here. [citation needed] Kelsey Lake Diamond Mine: Colorado: State Line Kimberlite District McKenzie Bay
San Juan County, Utah: Lisbon Valley Mining Company Copper ore, open pit, heap leached 10–15 (2018) [9] 17 Miami: Gila County, Arizona: Freeport-McMoRan: Copper ore, leached 5 (2021) [2] 18 Carlota Gila County, Arizona: KGHM Polska Miedź: Porphyry copper open pit, producing copper cathode 3.2 (2018) [10] 19 Pumpkin Hollow (see Anaconda) Lyon ...
Open-pit mining, also known as open-cast or open-cut mining and in larger contexts mega-mining, [1] is a surface mining technique that extracts rock or minerals from the earth. Open-pit mines are used when deposits of commercially useful ore or rocks are found near the surface where the overburden is relatively thin. In contrast, deeper mineral ...
Includes a limestone quarry and kilns for producing quicklime, built in 1911 and abandoned in the 1920s. William Johnston Lime Kiln, Saylesville, Wisconsin, NRHP-listed; Hadfield Company Lime Kilns, Waukesha, Wisconsin, NRHP-listed; List of historical markers in Kewaunee County, Wisconsin; Limekiln State Park, Big Sur, California; Quarry ...