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.
The discovery of blackjack (a kind of zinc ore) on the Cook Forty in Galena in 1870 marked , Oklahoma was one of the major lead and zinc mining areas in the world , McCauley, J R, Brady, L L, and Wilson, F W, 1983, A Study of Stability.