To help assure an ample domestic supply of zinc and other essential minerals which provide the foundation of the Nation’s economy and security, the Bureau
As part of the goal to develop technology that can meet critical and strategic needs of minerals and metals, the Bureau of Mines is investigating
One objective is the secondary recovery of metals, minerals, and other values from waste products and the development of uses for them. In line with
Explosive Selection to Maximize Permeability Enhancement: As can be seen from the previous sections the single most important scaling parameter is the postshot cavity radius or
Crushing of mica prior to pneumatic processing technique were studied for concentrating coarse mica. Muscovite and phlogophite are the two major commercial mica minerals. However,
The Bureau of Mines researched methods for recovering copper from cyclone and electrostatic-precipitator dusts of primary copper smelters as part of its program to maximize
Objective: To separate complex mineral mixtures according to their dielectric properties. Approach: Develop a laboratory-scale continuous dielectric separator to separate mineral mixtures by exploiting their difference in
When a site where gold is known to occur has been found, and after it has been sampled and judged worthy of further effort, the