Half the coal used in the United States comes from this extraction process.

Name: Half the coal used in the United States comes from this extraction process.
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Strip mining is the most common way of extracting coal in the United States, accounting for around half of the total coal production. Open-pit mining is another method used, but it is not as prevalent as strip mining. Tar fields and oil rigs are used to extract crude oil, not coal. Runoff from farms is not related to the extraction of coal.

Half the Coal Used in the United States Comes from This