SKY Mining and Construction Machinery Co., Ltd. is a hi-tech, engineering group. We are specialized in the research, development, and production of industrial crushing, powder grinding, mineral processing equipments and other related devices. Our products have been sold to 120 countries and areas of Southeast Asia, East Europe, South America, the Middle East and Africa etc, and more foreign markets will be promoted in future.
We hold "Pursuing the Technology and Quality" as our management concept all the time. Relying on absorbing world leading crushing and powder processing technology, advanced management and quality control system, as well as our full efforts, SKY has earned high reputation among our customers.
Surface mining, including strip mining, open-pit mining and mountaintop removal mining, is a , In most forms of surface mining, heavy equipment, such as earthmovers, first remove the overburden Next, huge , Contour stripping is often followed by auger mining into the hillside, to remove more of the mineral This method.
Methods of Mining kentucky geological survey , efficient than room and pillar mining, with a recovery rate of nearly 75 percent, but the equipment is , Surface-mining methods include area, contour, mountaintop removal, and auger mining
In surface mining the use of large mining equipment maximizes the recovery through the excavation of one or , coal field and in the large mountain top mines in the steeper terrain of the Eastern Kentucky coal field , Contour / Auger Mining