This Bureau of Mines report results from a study on prereduced nickel concentrate from the FENI project in Yugoslavia; this study was conducted in cooperation
Most of the mines with large openings in the United States today are salt and limestone mines. Some potash and trona mines also have moderately
Until the late 19th century iron oxide pigments were obtained wholly from natural materials, generally with little alteration other than physical purification. In some cases
Cost is a major criterion in decision making for selecting operational methods in mining. Knowledge of the operating cost, therefore, provides a sound basis for
The United States has almost limitless supplies of magnesium chloride available for the production of magnesium metal in the form of hydrated salts or brines
One of the goals of the Bureau of Mines is to insure that an adequate supply of minerals is available to meet national, economic, and
The Bureau of Mines strives continually toward its goals of maximizing minerals and metals recovery from primary and secondary domestic resources, and reducing energy requirements
The present technology for processing copper sulfide ores involves pyro-metallurgical (smelting) and to some degree hydrometallurgical techniques. Although these techniques are efficient and economical, they
Despite severe slippage in the growth rate of nuclear power, current estimates still show that the U.S. uranium demand will exceed the production capacity from
There is a wide difference in the floatability of coals of different rank, and even of the same rank, depending on whether they have been