The Mining Cycle Exploration MiningReclamation Metals-6-1 Images: Martin Miller.

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Presentation transcript:

The Mining Cycle Exploration MiningReclamation Metals-6-1 Images: Martin Miller

Useful metals come from rocks and minerals in the Earth’s crust. Metals-6-2 Galena sample – a main ore of lead.Image: Stonetrust, Inc.

Geologists explore for useful metals by mapping, drilling, and sampling rocks and minerals. Metals-6-3 Image: Martin Miller

Many rocks containing useful metals are mined from surface excavations. Metals-6-4 Image: Kennecott Utah Copper Co.

Some rocks containing useful metals are mined from underground. Metals-6-5 Image: US Bureau of Land Management

After mining removes the rocks containing useful metals, surface disturbances are covered with soil layers and revegetated. This is called reclamation. Metals-6-6 Image: Kennecott Utah Copper Co.

Mines are not closed until reclamation that protects surface and water resources is complete. Metals-6-7 Before After Images: Gold Institute, Echo Bay Mines; S. Warren

The Mining Cycle Exploration MiningReclamation Metals-6-8 Images: Martin Miller