The largest coal mine in China — Haerwusu Open Pit Mine.The coal mine is located in the Inner Mongolia Autonomous Region City, Zhungeer Qi Ordos (Xuejiawan) Eastern genera in this area, the North has been built in Heidaigou Open-pit Coal mine.There are many mining conveyor rollers are used in the mine. Recoverable coal reserves is 17.3 tons, the average coal seam thickness is 21.01 meters, the whole average stripping ratio is 6.626 cubic meters per ton. The design service life is 79 years. The first coal mine reserves 6.36 tons, with an average stripping ratio of 4.099 cubic meters per ton, and a service life of 32 years.

The coal mine for ash, low sulfur, low phosphorus, high volatile, high calorific value, high ash melting point of long flame coal, known as the “green coal”, coal with high quality power, has a broad market prospect.The surface mining technology of coal mine mining and tracking with single bucket excavator shovel and truck and dragline stripping operation. Every day the world giant consisting of self unloading truck super heavy transport team gathered here, this is known as the “iron and Steel Group Mining toil” monster from rushing in Wujin mining environment, create great value.

The open-air coal mine is located in the Ordos Plateau, which is one of the most serious areas of water and soil erosion in China. The original surface gully is vertical and horizontal, the vegetation is sparse, the wind erosion and desertification are very serious, and the natural environment is very bad. From the basic construction, the open pit coal mine will be synchronized with the development and greening.The healthy development of coal mine is good at the market of mining conveyor rollers.

The world’s largest coal mine – Rochester coal mine. The coal mine is located in the Powder River Basin of Wyoming, is the world largest coal mining with more than 23 tons. The mine is also one of the world’s largest coalfield, by Peabody energy company.Every year the mine buy many mining conveyor rollers. The coal bed of Rochester coal mine occupies 18.3 meters of the surface layer of 76.2 meters and stretches for 80.47 kilometers. The mine covers an area of 258.9 square kilometers, equivalent to the size of Washington, D. c.. Carbon reserves of about 30 tons. It takes 25 to 30 years to complete the mining. Rochester coal production of coal is known as the most clean coal, the average heat of coal per pound of 8800 British thermal units, and the sulfur content of less than 0.2%.

The coal used dragline overcast stripping and single bucket and truck technology, rely on large-scale, highly mechanized equipment, greatly improve the work efficiency. Each day, about 21 trips of coal loaded trains will run from Wyoming’s Rochester coal mine to 100 coal-fired power plants across the country. Even the coal trucks parked at the Rochester coal mine plant are capable of loading as much as more than 440 tons.The city is known as the “world image center”, “flower city”, every spring, flowers bloom, and thus “flower city” in the world.