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The Ruby–Poorman mining district in the U.S. state of Alaska produced nearly a half million ounces of gold, all from placer mines. Some of the largest gold nuggets found in Alaska are from the district, which lies along the Yukon River. [1] The placers are mostly deeply buried, and most were originally worked with shafts and drifts. Dozens of ...
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. ... Gold Pan Placer ...
The Ruby-Poorman District lies south of the Yukon River. The district produced nearly a half million ounces of gold, all from placer mines. The largest gold nugget ever found in Alaska (294.1 troy oz) was recovered from Swift Creek in 1998. [31] The placers are mostly deeply buried, and most were originally worked with shafts and drifts.
In North America, placer mining was famous in the context of several gold rushes, particularly the California Gold Rush and the Colorado Gold Rush, the Fraser Canyon Gold Rush and the Klondike Gold Rush. Placer mining continues in many areas of the world as a source of diamonds, industrial minerals and metals, gems (in Myanmar and Sri Lanka ...
The discovery of gold at Sutter's Mill in 1848 is one of the defining moments in California history, with roughly 300,000 forty-niners flocking here to make their fortune from the U.S. and abroad.
This list of gold mines in the United States is subsidiary to the list of mines article and lists working, defunct and future mines in the country and is organised by the primary mineral output. For practical purposes stone, marble and other quarries may be included in this list.
An Oregon City Mining Company employee had found placer gold along the upper Molalla in 1860. Over the next 40 years, many others filed mining claims in the Molalla watershed. The biggest claimant, the Ogle Mountain Mining Company, operated the Ogle Mountain Mine between 1903 and 1915.
Gold mining is one of the most common uses for the staking of mining claims. In Alaska, state mining claims may be up to 160 acres (0.65 km 2), and there is no distinction between lode or placer claims. The boundaries of the claim must follow the 4 cardinal directions, with an exception being adjustments for existing valid claims.