Placer County (/ ˈ p l æ s ər / PLAS-ər), officially the County of Placer, is a county located in the U.S. state of California. As of the 2010 census, the population was 348,432. The county seat is Auburn .

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Gold is mined either from placer deposits, where its heavy specific gravity allows easy separation from the gangue (panning for gold), or increasingly from primary ore bodies as the placer deposits are exhausted. Even the richest gold ores typically contain only a few ounces of gold per ton of gangue rock, so that the gold must be extracted ...

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placer[′plās·ər] (geology) A mineral deposit at or near the surface of the earth, formed by mechanical concentration of mineral particles from weathered debris. Also known as ore of sedimentation. Placer (placer deposit), a surficial accumulation of small fragments of rocks or minerals that result from the destruction of primary deposits of useful ...

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In the early 1850s prospectors had searched the valleys on the eastern side of the Sierras and found small quantities of placer gold.Not till 1859, however, were the surface outcroppings of the Comstock Lode discovered in Nevada--one of the world's mineral treasure stores, which at its best yielded $20,000,000 worth of mingled gold and silver annually, and over time produced a total of ...

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PLACE, pleading, evidence. A particular portion of space; locality. 2. In local actions, the plaintiff must lay his venue in the county in which the action arose. It is a general

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placer gold by gregory v. stone - angus & placer gold by stone, gregory - biblio.com placer gold, gregory stone - 6 books of gregory stone "sheep eaters' gold", " placer gold ebook: gregory stone: .au: books: placer gold (paperback) by gregory stone, placer gold | 9781439238233 book search - better read than dead bookstore placer gold: author: gregory stone, isbn: placer ...

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Rockerville is a small unincorporated community in Pennington County in the Black Hills of the U.S. state of South Dakota.It originally started as a mining camp. It was named for the "rockers" which were used to separate placer gold from stream gravel.. Rockerville was founded in 1876 as the result of a gold …

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Placer Dome Inc. is an international gold mining company and North America ' s largest gold producer. In 1996, it operated 16 mines in 5 countries: Canada, the United States, Australia, Chile, and Papua New Guinea and produced 2.2 million ounces of gold. Placer Dome ' s share of this production amounted to 1.9 million ounces. The company ...

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Apr 13, 2019· If you want to find your own placer gold, what you know about how placer deposits form is critical. The more you know, the more successful you are likely to be. This video will help you find more ...

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The AU Grabber (pronounced as: Gold Grabber) is an self-propelled barge excavator dredge used to mine Bering Sea placer gold deposits in the region around Nome, Alaska, USA.It is owned and operated by Richard Schimschat and featured in the Discovery Channel USA mining reality TV show Bering Sea Gold. It cost $600,000 to buy. In 2017 a 120 lb two week old walrus calf was found on the dredge.

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Place The marketing of new securities, usually through sales to institutional investors. See: Float. Placement The act or process of selling a new issue of a security to investors. Most of the time, a placement must be registered with the SEC before it can actually take place. See also: Private placement. place To sell a new securities issue. place an ...

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Placer Dome Inc. was a large mining company specializing in gold and other precious metals, with corporate headquarters in Vancouver, British Columbia, Canada. WikiMili The Free Encyclopedia Placer Dome

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Synonyms for placer miner in Free Thesaurus. Antonyms for placer miner. 2 words related to placer miner: miner, mineworker. What are synonyms for placer miner?

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When the target of a placer operation was the gold-bearing gravel beneath a flowing river or stream, wing dams were built to divert the flow away from the area to be mined. A wing dam is a partial L-shaped cofferdam, with the short leg extending diagonally out from the bank into the river and the longer leg continuing from that point downstream ...

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That's why I have assembled the following information on the placer districts of both Northern Nevada. Its still pretty small, but I expect to be adding more information soon. Nevada Produces a huge amount of microscopic sized gold each year, and I've included information on that in this section as well.

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George Jackson's discovery of a substantial placer deposit in Chicago Creek near present-day Idaho Springs in January 1859, a lode gold (veins of gold embedded in rock) discovery at Gold Hill in January 1859, and John Gregory's finding of lode gold near Black Hawk fueled a Gold Rush which drew tens of thousands of prospectors into the ...

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Placer County is a county in the U.S. state of California.In the 2010, 348,432 people lived there.The county seat is Auburn

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Other articles where Stream placer is discussed: placer deposit: …several varieties of placer deposits: stream, or alluvial, placers; eluvial placers; beach placers; and eolian placers. Stream placers, by far the most important, have yielded the most placer gold, cassiterite, platinum, and gemstones. Primitive mining probably began with such deposits, and their ease of mining and sometime ...

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The Popular Mining Encyclopedia is a collection of Articles from Popular Mining Magazine which was published from 1984 to 1996. It was the How-To-Do-It magazine for the small miner. It was published monthly and each month had lot's of articles on how to build sluice boxes, Leaching systems, Amalgamation systems, crushers, grinders and on and on.

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Mining - Mining - Placer mining: Placers are unconsolidated deposits of detrital material containing valuable minerals. The natural processes by which they form range from chemical weathering to stream, marine, and wind action. Typical minerals recovered in placers are gold, tin, platinum, diamonds, titaniferous and ferrous iron sands, gemstones (rubies, emeralds, and sapphires), and abrasives ...

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Placer gold first attracted prospectors north from earlier gold rushes in the western US in the mid-19th century, with the Cariboo gold district of central BC discovered in 1859. In 1896 the discovery in the Yukon of placer gold on the Klondike River and its tributaries led to the most extensive gold rush in Canadian history (see Klondike Gold ...

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Popular Mining Encyclopedia. Volume 4. The Popular Mining Encyclopedia is a collection of Articles from Popular Mining Magazine which was published from 1984 to 1996. It was the How-To-Do-It magazine for the small miner.

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Placer mining, ancient method of using water to excavate, transport, concentrate, and recover heavy minerals from alluvial or placer deposits.Examples of deposits mined by means of this technique are the gold-bearing sands and gravel that settle out from rapidly moving streams and rivers at points where the current slows down.

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Placer gold synonyms, Placer gold pronunciation, Placer gold translation, English dictionary definition of Placer gold. n. The obtaining of minerals from placers by washing or dredging. placer miner n.

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Apr 15, 2019· Geology of placer gold deposits, part 2. In this part we will take a look at how to research out your own areas to go and prospect. We will touch on one of the biggest secrets of successful ...

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In January 1848, gold was discovered in California, setting off a frenzy of emigrants heading west the following year to claim their fortune. These travelers, like those before them, hustled past the famed South Pass and out of what would become the state of Wyoming.. Although rumors of gold in the South Pass area—and rumors of the rumors—had circulated for decades, nothing solid had been ...

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Gold is mainly found in two types of deposits: lode (hard rock veins) and placer (surface). Locating the richest gold bearing areas primarily involves research, planning, dedication and funds. In other words, those who study geological surveys, land formations, rock structures and gold prospecting history prior to prospecting may have a better ...

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Placer Mining Encyclopedia. 2020-4-18Placer County p l s r PLAS-r, officially the County of Placer, is a county located in the U.S. state of California. As of the 2010 census, the population was 348,432. The county seat is Auburn. Placer County is included in the Sacramento-Roseville-Arden. Get Price List

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