The geographical location of the Datong Coalfield is about 113゜7′ east longitude and about 40゜4′ north latitude. It spans Datong, Youyu, Pinglu, Zuoyun, Shuozhou and other cities and counties, and is roughly a rectangle. It runs from northeast to southwest, 85 kilometers long and 30 kilometers wide, with a total area of ??1,827 square kilometers and total coal reserves of 71.8 billion tons. Among them, Datong City occupies a coal-bearing area of ??632 square kilometers, with cumulative proven reserves of 37.6 billion tons.

There are two coal series in Datong Coalfield: Jurassic coal series and Carboniferous-Permian coal series. The Jurassic coal series was originally formed in the depression basin in the late Indosinian movement. Later, due to the influence of the Yanshan and Himalayan movements, it was involved in the Neocathaysian polygonal structure and is a single weakly caking coal. There are 18 minable coal seams in the Jurassic Coal Measures and Carboniferous Permian Coal Measures. Among them, there are 15 minable coal seams in the Jurassic Coal Measures and 3 minable coal seams in the Carboniferous Permian Coal Measures. The total thickness of the two is 26 meters, equivalent to the height of a seven-story building.

Datong Coalfield not only has large reserves, but also has good coal quality. The Jurassic coal system being mined is the best thermal coal and is known as "the world's finest thermal coal". It has five major characteristics: First, it has strong firepower. Ordinary coal has a calorific value of only 5000-6000 kcal per kilogram and can only boil 9-10 kilograms of water; Datong Jurassic coal has a calorific value of about 8000 kcal per kilogram and can boil 9-10 kilograms of water. Boil 11-12 kg of water. The second is low ash content. The ash content of ordinary coal is 10-20, that is, 10-20 kilograms of ash will be left after every 100 kilograms of coal is burned. The ash content of Datong Jurassic coal is only 5-8, that is, every 100 kilograms of coal. After burning, there is only 5-8 pounds of ash. The third is that there are few impurities such as sulfur and phosphorus. The sulfur content of Datong Jurassic coal is less than 1 and the phosphorus content is only 0.29. The fourth is high volatile matter. The volatile matter content of Datong Jurassic coal is between 30 and 34. It is easy to ignite when used as fuel, suitable for making coal gas, and is a good raw material for processing and converting into coal chemical products. The fifth is high hardness. Hard coal is difficult to mine, but transportation, especially long-distance transportation, is very convenient. Datong's high-quality coal has been famous for a long time. In the past, coal merchants in Beijing and Tianjin used "Kouquan Big Block" as a trademark to attract customers. Now Datong coal is an indispensable industrial food for national construction.

In addition, Datong Coalfield also has excellent mining conditions. First of all, its coal seam is very close to the surface. Generally, you only need to drill down 60-100 meters to find the coal when drilling the shaft. The deepest part does not exceed 400 meters. Therefore, the well construction is fast and the investment is low. Second, the inclination of the coal seam is small, and the general inclination is around 5, which is convenient for mechanical mining. Third, the roof is hard, and the roof rocks are mostly hard colloid rocks. In some places, the roof rocks have not fallen off even after decades of mining. Fourth, the amount of gas is small. Fifth, there is little groundwater. Generally, the water inflow volume in mines is about 6-7 tons per minute, or even more. The water inflow volume in Datong Coal Mine does not exceed 1 ton, so drainage equipment can be saved.