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The extraction of minerals has been going on since prehistoric time, in many parts of the world. Today, mining exists in most countries, and includes exploration for minerals, extraction of minerals, and preparation, including crushing, grinding, concentration or
washing of the extracted material. Mining operations can be grouped into five major
categories in terms of their respective products: coal mining, metal ore mining, nonmetallic
mineral mining and quarrying, oil and gas extraction, and support activities for mining. Oil and gas extraction is not considered in this anthology.

The extraction of minerals has been going on since prehistoric time, in many parts of the world. Today, mining exists in most countries, and includes exploration for minerals, extraction of minerals, and preparation, including crushing, grinding, concentration or
washing of the extracted material. Mining operations can be grouped into five major categories in terms of their respective products: coal mining, metal ore mining, nonmetallic mineral mining and quarrying, oil and gas extraction, and support activities for mining. Oil and gas extraction is not considered in this anthology.

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