August 2001
Volume 53    Issue 8

Industrial minerals shown on postage stamps

Mining Engineering , 2001, Vol. 53, No. 8, pp. 10-12
Habashi, Fathi

Industrial minerals are usually divided into three groups. The first group is abundant in all geologic environments. These industrial minerals are used in large amounts. And they are relatively cheap. Some examples include limestone, clay, sand, gravel and stones.

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