Tashan Coal Mine, the world's largest single-entry underground mine, has cut its production capacity by 15 percent over the last four months, in a key feature of the supply-side reform in China's coal industry.

"The company has been strictly following the 276-working-day limit and the production safety notice issued by the central government and the provincial administration," said Zhang Meiping, director of Tashan Coal Mine, located 15 kilometers to the southwest of Datong, Shanxi province.

Tashan Coal Mine, which became operational in 2006, has an annual designed capacity of 15 million tons. It is owned by Shanxi Datong Coal Mine Group, the third-largest mining company in China.