- Certain natural substances that are found inside the earth and are useful to mankind are called mineral resources. Eg: Coal and Petroleum.
- Similarly, we get metal such as iron, copper, zinc, lead, gold, etc and raw materials for cement, porcelain, glass, etc from minerals which are used to manufacture arms, construction works, industry, etc.
- According to preliminary statistics iron, copper, mica, gold, lead and zinc, lime- stone, gravel and boulder, talc, asbestos, salt, slate, etc are being exploited economically. Most of them lying till now (CBS, 1998).
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