Nitre Refining When the molten gold is obviously impure nitre is added, and as a rule its main action is to eat the pot away,
The purification of such alluvial gold alloys is a simple matter. The high specific gravity of the metal allows of separation from most admixed materials
The little book on ‘Surface Tension and Surface Energy’ by Willows & Hatschek shows how the elastic film analogy in the study of froth will
Useful Table contains the Angle of Repose, Bulk Density and other Characteristics of various materials.
The mines and mining methods of the now defunct Arizona Mining Copper Co. are situated in the Morenci-Metcalf copper district in southeastern Arizona. This copper-bearing
Efficient Merrill Crowe precipitation of gold and silver is dependent upon the proper control of certain physical and chemical properties of the solution. The most
Here is described the essential features of the Merrill Crowe Process and its equipment/apparatus used for the Simultaneous Clarification, De-aeration and Precipitation of cyanide solutions. Limited
While concentrating the galena in the lead ore produced from the Central mine, a valuable by-product was obtained in the form of slime assaying 18%
For a number of years I have used for the commercial wet assay of lead generally the ammonium molybdate, and occasionally the ferrocyanide method. These