What city is Dayan?

Dayan is a mining area in Ewenki Banner, Hulunbeier City, Inner Mongolia. Dayan Mining Group Co., Ltd. was established in 1970, and Dayan Mining Bureau was established in 1974. It is one of 94 coal enterprises directly under the central finance. 1998 was decentralized to Inner Mongolia Autonomous Region and transformed into Dayan Coal Industry Co., Ltd. ...