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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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Presentation Transcript
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
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
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
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
Some rocks containing useful metals are mined from underground.

Image: US Bureau of Land Management

Metals-6-5

slide6

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
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
The Mining Cycle

Exploration

Reclamation

Mining

Images: Martin Miller

Metals-6-8

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