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Mining removes rocks and minerals that contain useful metals from the Earth’s crust.

Mining removes rocks and minerals that contain useful metals from the Earth’s crust. Image: G. Plumlee, USGS. Metals-2-1. Many mines are large surface excavations. Image: Kennecott Utah Copper Co. Metals-2-2. Some mines are underground. Image: US Bureau of Mines. Metals-2-3.

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Mining removes rocks and minerals that contain useful metals from the Earth’s crust.

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  1. Mining removes rocks and minerals that contain useful metals from the Earth’s crust. Image: G. Plumlee, USGS Metals-2-1

  2. Many mines are large surface excavations. Image: Kennecott Utah Copper Co. Metals-2-2

  3. Some mines are underground. Image: US Bureau of Mines Metals-2-3

  4. Drilling cuts holes in metal-bearing rock where explosives can be placed. Metals-2-1

  5. Explosions - or blasts - break metal-bearing rock into blocks and fragments. Image: US Bureau of Mines Metals-2-5

  6. Metal-bearing rock broken by blasting is hauled to a crusher. Image: US Bureau of Mines Metals-2-6

  7. Crushed metal-bearing rock - most pieces smaller than a baseball - is ready for processing that removes metals. Image: Kennecott Utah Copper Co. Metals-2-7

  8. All mines eventually deplete their valuable metal-bearing rock and close. Image: Kennecott Utah Copper Co. Metals-2-8

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