Surface mining

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placer mining | Britannica Gold Mining Equipment, Surface Mining, Petroleum Engineering, Gold Prospecting, Geology Rocks, Mining Equipment, Gold Mining, Coal Mining, Earth Science

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

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Mountain top destruction    An explosive is detonated at an A Coal Corp. surface mine in the Appalachian Mountains on April 16 in Wise County, Va. Critics refer to this type of mining as "mountaintop removal mining," which they say has destroyed 500 mountain peaks and at least 1,200 miles of streams while leading to increased flooding. The Appalachians are some of the oldest mountains on Earth.  Jonathan Ernst / Reuters Surface Mining, Water Pollution, Appalachian Mountains, Pictures Of The Week, Coal Mining, April 16, Mountain Top, Pollution, New World

Mountain top destruction An explosive is detonated at an A Coal Corp. surface mine in the Appalachian Mountains on April 16 in Wise County, Va. Critics refer to this type of mining as "mountaintop removal mining," which they say has destroyed 500 mountain peaks and at least 1,200 miles of streams while leading to increased flooding. The Appalachians are some of the oldest mountains on Earth. Jonathan Ernst / Reuters

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Running Business, Surface Mining, Economic Geography, Steel Industry, Mining Industry, Sand And Gravel, Global Supply Chain, Mining Equipment, Gold Mine

There are four main mining methods: underground, open surface (pit), placer, and in-situ mining. Underground mines are more expensive and are often used to reach deeper deposits. Surface mines are typically used for more shallow and less valuable deposits. Placer mining is used to sift out valuable metals from sediments in river channels, beach sands, or other environments. In-situ mining, which is primarily used in mining uranium, involves dissolving the mineral resource in place then…

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