· Undoubtedly, it is the key source loion of coal energy for future development in China. Figure 1: The Ordos coalfield, Inner Mongolia, China, showing the major coal mines operated by Shenhua Coal Group, the world largest coal company producing more than 400 million metric tons in 2012. The Ordos coalfield is a monosynclinal structure. Coal seams are shallower, 0100 m (0328 ft) .
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