The hammer drill rightly receives the credit for having made the one-man drill possible, and so many economies seem possible through the proper application of
Discovery of Gold Bearing Gravel in Canada A woman first discovered gold in the Chaudiere Valley near the mouth of Gilbert River. No attention was paid to
Transportation of Ore and Waste For the purpose of this discussion, “transportation” signifies the operations involved in transporting ore and waste from the face or
Recovery of Uranium In the extraction process practically all of the uranium in the ore is dissolved in the nitric acid, a little remaining in
Radium Measurements One of the most essential factors in the successful production and concentration of radium consists in following the material being concentrated, by means
Refining in the Plant The first treatment of the radium-barium sulphates is of great importance, as the whole capacity of the plant, as far as
As the sodium uranate requires re-treatment, owing to the fact that it carries vanadium, it is not necessary to wash the cake as completely as
The method of treating carnotite, a uranium, ore used by the Bureau of Mines is outlined in this chapter. Leaching, Filtering, and Washing Ore The
Stoping The foregoing discussion relates to general mine development and covers the work required to reach and penetrate the ore bodies and to provide the
The Bureau of Mines investigations described in this report were undertaken to devise a process to economically recover precious metals and copper from low-grade, complex