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Each one frame and stamp set is sometimes called a "battery" or, confusingly, a "stamp" and mills are sometimes categorised by how many stamps they have, i.e. a "10 stamp mill" has 10 sets. They usually are arranged linearly, but when a mill is enlarged, a new line of them may be constructed rather than extending the line.
The Davis Mill is a historic stamp mill located off of North Bloomfield Road northeast of Nevada City, California. The mill served the Randolph Mine, a small gold mine run by the Davis family, from 1915 to 1940. It included the standard machinery of an early 20th century stamp mill, which consisted of a stamp battery, a rock crusher, an ore bin ...
Exhibits include the crystalline gold Fricot Nugget, weighing 201 troy ounces (6.25 kg), the largest found during the California Gold Rush; a working scale model of a stamp mill over 100 years old, demonstrating the process of extracting gold from quartz rock; and a replica hard rock mine tunnel that allows visitors to better understand California's hard rock mines.
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Skidoo (formerly, Hoveck) [3] was an unincorporated community in Inyo County, California. [1] The geographical location of the old town site lies at an elevation of 5,689 feet (1734 m). [1] Skidoo is a ghost town located in Death Valley National Park. It is on the National Register of Historic Places. [4]
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The stamp mill contained 40 1,250 pounds (570 kg) stamps. Ore entering the mill from the tramway went over grizzlies. It then went to stamps which dropped 106 times per minute. Only outside amalgamation was used, and the pulp flowed over 6 feet (1.8 m) amalgamating plates to Frenier sand pumps, which sent it to hydraulic classifiers.
The equipment used at that time was a 6-inch (150 mm) by 12-inch (300 mm) Blake crusher and a 5-foot (1.5 m) Huntington mill. In the late 1920s, Mr. Carlisle installed a small roasting and cyanide plant to process the ore, but later the ore was shipped to Acton for processing. The Huntington mill was scrapped at this time.