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The Mining Cycle PowerPoint PPT Presentation


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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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The Mining Cycle

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The mining cycle l.jpg

The Mining Cycle

Exploration

Reclamation

Mining

Images: Martin Miller

Metals-6-1


Useful metals come from rocks and minerals in the earth s crust l.jpg

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


Geologists explore for useful metals by mapping drilling and sampling rocks and minerals l.jpg

Geologists explore for useful metals by mapping, drilling, and sampling rocks and minerals.

Image: Martin Miller

Metals-6-3


Many rocks containing useful metals are mined from surface excavations l.jpg

Many rocks containing useful metals are mined from surface excavations.

Image: Kennecott Utah Copper Co.

Metals-6-4


Some rocks containing useful metals are mined from underground l.jpg

Some rocks containing useful metals are mined from underground.

Image: US Bureau of Land Management

Metals-6-5


Slide6 l.jpg

After mining removes the rocks containing useful metals, surface disturbances are covered with soil layers and revegetated. This is called reclamation.

Image: Kennecott Utah Copper Co.

Metals-6-6


Mines are not closed until reclamation that protects surface and water resources is complete l.jpg

Mines are not closed until reclamation that protects surface and water resources is complete.

Before

After

Images: Gold Institute, Echo Bay Mines; S. Warren

Metals-6-7


The mining cycle8 l.jpg

The Mining Cycle

Exploration

Reclamation

Mining

Images: Martin Miller

Metals-6-8


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