write about the extraction of coal
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Explanation:
Coal mining is the process of extracting coal from the ground. Coal is valued for its energy content, and, since the 1880s, has been widely used to generate electricity. Steel and cement industries use coal as a fuel for extraction of iron from iron ore and for cement production.
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coal mining is a process to extract coal from the ground.
methods for Cole mining.........
- surface mining: when coals are near the surface the surface mining used for exact the coal.
- strip mining: strip mining exposes Cole by removing earth above each cole seam.
- contour mining
- mountaintops removing mining.
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