Useful metals - PowerPoint PPT Presentation

The Mining Cycle

The Mining Cycle. Exploration. Reclamation. Mining. Images: Martin Miller. Metals-6-1. Useful metals come from rocks and minerals in the Earth’s crust. Galena sample – a main ore of lead. Image: Stonetrust, Inc. Metals-6-2.

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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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219 views • 8 slides

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

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246 views • 8 slides

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