http://www.chinakingho.com/en_second/index.aspx?nodeid=202&page=ContentPage&contentid=568 The Muli Coal Mine of Qinghai Kingho Group] The Muli coal fields are connected with the Ha'ergai railway station on the Qinghai–Tibet Railway by a 195 kilometers long branch railway, whose two sections are known as the Chada'er Railway ( ) and the Cha-Mu Railway ( ).