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Types of Mining Methods

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Underground Mining

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Below surface mining method to reach minerals and ores. Tunnels or shafts are dug to access the deposits.

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Open-Pit Mining

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A surface mining technique where a large pit is made in the ground to extract ores near the surface.

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Shrinkage Stoping

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A method where broken ore is used as a platform from which to drill and blast more ore.

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Dredging

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Mining method that involves the removal of underwater sediments and debris, often for gold or minerals.

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Sublevel Stoping

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Underground method involving horizontal levels from a vertical ore body.

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Room and Pillar Mining

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Underground mining method where 'rooms' of ore are extracted with 'pillars' left standing to support the roof.

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Contour Strip Mining

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Method of mining following contour lines and removing overburden to access a mineral seam.

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Block Caving

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Underground mining method that involves undermining an ore body and allowing it to progressively collapse.

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Cut and Fill Mining

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An underground technique where the ore is cut and removed in slices, then filled with waste rock or tailings.

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Quarrying

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Surface mining method for extracting stone or slate from an open pit or burrow.

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Dragline Excavation

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Surface mining technique using large machines to remove overburden or to mine coal directly.

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Retreat Mining

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A final phase of room and pillar underground mining, where pillars are removed as miners retreat.

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Hydraulic Mining

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Mining technique using high-pressure jets of water to dislodge rock material or move sediment.

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Caving Methods

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A category of mining in which ore is mined from underneath, causing the ground above to collapse.

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Longwall Mining

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Form of underground coal mining where a long wall of coal is mined in a single slice.

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In-Situ Leach (ISL) Mining

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A technique in which soluble metals are dissolved in-situ and pumped out, commonly used for uranium.

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Highwall Mining

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A form of surface mining employing a remote-controlled continuous miner which extracts coal and conveys it via loaders, shuttle cars, and conveyors.

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Heap Leaching

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Method of using a leach solution to extract metal ores from heaps of crushed ore.

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Mountaintop Removal

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Type of surface mining that involves removing the summit of a mountain to access underlying coal seams.

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Placer Mining

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Extracting mineral deposits from a stream or river bed. Often associated with gold and gemstones.

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