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Rocks

Rock Products and Uses.

All raw materials come from the Earth's crust, the oceans and the atmosphere.
Metals and oil have already been discussed.

Some rocks are used in construction for building.
These include
Granite            Limestone

Marble                  Slate

Granite and limestone are used in road construction.
Limestone has a number of other important uses.

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Copyright © 2008 Dr. Colin France. All Rights Reserved.