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The Opal mines are located in the Northern valley. [1] The Virgin Valley has mines that are rich in opals. The opals were discovered in about 1913. [2] The richest mines were owned by Flora Haines Loughead who had been a writer and a farmer but bought a string of claims after being sent to do a story for the San Francisco Chronicle. [3]
Print/export Download as PDF; Printable version; In other projects ... Pages in category "Mines in California" The following 4 pages are in this category, out of 4 ...
NMMR's oldest mine: 1792 anthracite coal, "Old Mine." One of NMMR's oldest mine maps: 1859 anthracite coal map from Hazleton Coal Co. The NMMR contains digital and microfilm maps of surface and underground coal, metal, and non-metal mines throughout the United States. Some of the information that can be obtained from the repository includes:
Print/export Download as PDF; ... Map all coordinates using OpenStreetMap. ... Pages in category "Gold mines in California" The following 25 pages are in this ...
The Empire Mine is "one of the oldest, largest, deepest, longest and richest gold mines in California". [3] Between 1850 and its closure in 1956, the Empire Mine produced 5.8 million ounces (165 tons) of gold, extracted from 367 miles (591 km) of underground passages. [4]
Kennedy Mine: Jackson: 1886–1942 South of Sutter Gold Mine Locarno Mine: McLaughlin Natural Reserve: Mesquite Mine: Monte Cristo Gold Mine: North Star Mine: Sutter Gold Mine Sutter Creek: Sutter Gold Mining Inc. Tourist tours shut down in September 2011 Cerro Gordo Mine
Norwalk city, California – Racial and ethnic composition Note: the US Census treats Hispanic/Latino as an ethnic category. This table excludes Latinos from the racial categories and assigns them to a separate category. Hispanics/Latinos may be of any race. Race / Ethnicity (NH = Non-Hispanic) Pop 2000 [21] Pop 2010 [22] Pop 2020 [23] % 2000 % ...