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Chapter 74 - Mining and Quarrying - ilocis.org

Chapter 74 - Mining and Quarrying MINING: AN OVERVIEW. Norman S. Jennings. Minerals and mineral products are the backbone of most industries. Some form of

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Chapter 82 - Metal Processing and Metal Working Industry

Zinc. Zinc concentrate is produced by separating the ore, which may contain as little as 2% zinc, from waste rock by crushing and flotation, a process normally ...

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