Zobrazeno 1 - 2
of 2
pro vyhledávání: '"R. C. Pakalnis"'
Publikováno v:
Mining Technology. 117:142-153
The preconcentration of metal bearing ore through the rejection of coarse, barren waste material is not a new concept. However, the approach has not found wide application in the industry due to several common misconceptions about the principles and
Publikováno v:
Environmental Geology. 23:221-227
Aggregates are produced from sand and gravel deposits or from bedrock sources. Production sites are numerous to minimize transport and are more and more in a competing land use position. Urbanization, while creating a market, also sterilizes deposits