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

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Mining removes rocks and minerals that contain useful metals from the Earth s crust. - PowerPoint PPT Presentation


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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
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
Many mines are large surface excavations.

Image: Kennecott Utah Copper Co.

Metals-2-2

some mines are underground
Some mines are underground.

Image: US Bureau of Mines

Metals-2-3

explosions or blasts break metal bearing rock into blocks and fragments
Explosions - or blasts - break metal-bearing rock into blocks and fragments.

Image: US Bureau of Mines

Metals-2-5

metal bearing rock broken by blasting is hauled to a crusher
Metal-bearing rock broken by blasting is hauled to a crusher.

Image: US Bureau of Mines

Metals-2-6

slide7
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

slide8

All mines eventually deplete their valuable metal-bearing rock and close.

Image: Kennecott Utah Copper Co.

Metals-2-8

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