Mineral Exploration and Mining Flashcard

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What is Room-and-pillar mining?

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A mining method used to extract ore deposits that are 50 m or more beneath Earth's surface by creating a network of entries and leaving pillars of ore for support.

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What are diamonds and precious metals?

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Mineral resources found on the ocean floor, often extracted through specialized mining techniques.

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What are stream placers?

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Deposits that contain valuable minerals concentrated by mechanical action, typically found in riverbeds.

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What is smelting?

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The process of melting or fusing ore to separate impurities from pure metal.

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What is the purpose of quarrying?

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To extract minerals or rocks from the earth's surface, typically for construction or industrial use.

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What is open-pit mining?

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A surface mining technique where a large excavation is made to extract minerals close to the surface.

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What is longwall mining?

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A method of underground mining where a long wall of coal is mined in a single slice, with the roof allowed to collapse behind the operation.

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What is dredging?

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A method used to remove material from the bottom of water bodies, often used for mining sand and gravel.

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What are undersea deposits?

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Mineral resources located on the ocean floor, which can include various valuable minerals.

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What is placer mining?

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A mining method that involves extracting valuable minerals from alluvial deposits, typically using water.