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The Oregon Department of Geology and Mineral Industries (DOGAMI) is the agency of the government of the U.S. state of Oregon responsible for collecting, maintaining and disseminating geologic information, and regulation of industries which commercially develop the state's geological resources, including Natural gas, Crude oil, and other Mineral exploration and Mining.
The Sumpter Valley Gold Dredge is a historic gold dredge located in Sumpter, in the U.S. state of Oregon. Gold was discovered in Sumpter in 1862. Gold was discovered in Sumpter in 1862. Three gold dredges were put into service in the Sumpter Valley district between 1912 and 1934.
The Chaffee law of 1869 and the placer law of 1871 were combined into the General Mining Act of 1872. The mining law of 1866 had given discoverers rights to stake mining claims to extract gold, silver, cinnabar (the principal ore of mercury) and copper. When Congress passed the General Mining Act of 1872, the wording was changed to "or other ...
Through 1959, the Mother Lode produced about 13.3 million troy ounces (414 tonnes) of gold. [17] The second-largest gold-mining district in California was Grass Valley-Nevada City district in Nevada County. Gold in Holocene gravels was found in 1850, followed a few years later by hydraulic mining of Tertiary gravels.
According to a 1904 dictionary of U.S. statutory language, "a mining district is a section of country usually designated by name and described or understood as being confined in certain boundaries, in which gold or silver or both are found in paying quantities, and which is worked therefor, under rules and regulations prescribed by the miners."
This list of mines in Oregon summarizes the mines listed by the Geographic Names Information System. As of January 7, 2014, there are 595 entries. As of January 7, 2014, there are 595 entries. name
The Bohemia mining district is an area of about 9 square miles (23 km 2) in the Cascade Range of the U.S. state of Oregon. Near Bohemia Mountain in Lane County, about 25 miles (40 km) southeast of Cottage Grove, the district was the most productive of the mining areas in the Western Cascades. Beginning in the 1860s, mines in the district ...
A gold pan. Gold prospecting is the act of searching for new gold deposits. Methods used vary with the type of deposit sought and the resources of the prospector. Although traditionally a commercial activity, in some developed countries placer gold prospecting has also become a popular outdoor recreation. Gold prospecting has been popular since ...