It's definitely not Hongwei Coal Mine (namely Hongmiao Coal Mine) that you pass by, but Fengshuigou Coal Mine in yuanbaoshan district, both of which are owned by Pingzhuang Energy. Pingzhuang Energy also owns Yuanbaoshan Open-pit Mine, Laoyingzi Mine, West Open-pit Mine and six coal mines. , all in the southeast of Chifeng city, is an absolute big mine. The nearest of these coal mines is Hongmiao Coal Mine, with a transportation distance of about 25KM, and the transportation distance of other coal mines from Chifeng City will not exceed 50KM.
As for the small coal mines you mentioned, there are many scattered around all the big mines.