The city of Huaipei in Anhwei province has grown into a coal base with 10 modern shaft mines, a large coal-dressing plant and other related industries.The coalfield extends over 109 square kilometers...
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The city of Huaipei in Anhwei province has grown into a coal base with 10 modern shaft mines, a large coal-dressing plant and other related industries.The coalfield extends over 109 square kilometers...