Opencast Coal Mine. This Surface Mine Was Built In 1960, Mainly The Production Of Lignite-Based, With An Annual Output Of Nearly 200 Million Tons Of Coal Over 40 Years Of Mining. Formation Of A Radius Of A Few Kilometers More Than 100 Meters Deep Pit.mine Running More Than 20'' The Upstream Type Steam Locomotive Large Excavator Product Of The Era Of The Former Soviet Union.

KEYWORDS

china coal energy generation hang inner lignite mine mining mongolia open operating pit steam tai train transportation