This paper is intended partly as a summary of the conclusions that have been arrived at by various authorities on this matter, and also with
In the early stages of opening up a mine, when there is some uncertainty as to its future career, necessitating caution in laying out works
Friends often ask how accurate the work of our little stamp-mill is, or express the opinion that a little mill cannot do good work. As
Stainless Steel Offers Many Advantages for containing strongly acidic leaching reactions in copper recovery operations. Hydrometallurgical techniques for copper extraction have been known probably since
A solution of lead-fluosilicate, containing an excess of fluosilicic acid, has been found to work very satisfactorily as an electrolyte for refining lead. It conducts
Electric power in mining-operations is now successfully applied to haulage, hoisting, lighting and pumping; and until lately, drilling was the one department of mining in
The following brief paper is intended, to apply to the concentration of the silver-lead ores at Broken Hill, New South Wales, generally, but more particularly
Shellsol AB is a high boiling, high aromatic solvent derived from petroleum. It has good colour, low odour, a narrow distillation range and high flash
The centrifugal elevator invented and patented by the writer is designed for the purpose of conveying the tailings of a gold dredge to such a
Several methods, both wet and dry, for the assay of zinc-box residues from the cyanide process, have been described in recent years, and each of