In the coal-mining sector, the Group has implemented technological innovation and industrial upgrading upon the old mining areas; promoted the construction of large-scale coal-mining bases; built a series of modern coal mines, including Huangling No. 1 and No. 2 Coal Mines, Hong Liulin Mines; developed a safe and efficient production capacity under all kinds of complicated geological conditions. The Group has actively promoted constructing circular economy, and promoted the efficient and clean use of resources through clean mining, recycling, and the clean coal technology. In January of 2014, the coal-mining sector of the Group was listed in Shanghai Stock Exchange, becoming the third biggest Chinese company in coal industry.