Give reasons: Most industries are concentrated around coal mines.

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Hint: Coal mining, extraction of coal stores from the outside of Earth and from underground. Coal is utilized for controlling the business and to complete any remaining exercises related to it.

Complete Answer: Coal is mined by two techniques: surface or 'opencast' mining or underground or 'profound' mining. The decision of mining strategy generally relies upon the topography of the coal store. Underground digging as of now represents a greater portion of world coal creation than opencast; albeit in a few significant coals delivering nations surface mining is more normal.

Coal is utilized as a crude material for some reasons in numerous ventures. Coal can be utilized in thermal power stations to produce heat and in this manner electricity. Coal can likewise be utilized for the creation of numerous manures, colours, synthetic reagents and so on. The side-effects of coal are additionally valuable; it incorporates phenol tar, sulfur, naphthalene and so forth. Along these lines, it tends to be seen that coal is valuable by and large. In this way, most industries are concentrated around coal mines. Setting up an industry near coal mines will also cut the cost of production. Another reason is the property of coal losing weight when put into use.

Note: In 2017, India had 315.14 billion metric tons (347.38 billion short huge loads) of coal. Dhanbad city of Jharkhand is the biggest coal-producing city in India.