There has been considerable discussion of late as to the best assay method for determining the silver-contents of sulphides of silver resulting from the leaching of
The photograph, Fig. 1, shows the apparatus a little less than half size, consisting of a filtering-flask fitted with rubber stopper through which passes a
In a paper, entitled A Uniform Method for the Assay of Copper Material for Gold and Silver, A. R. Ledoux invited the assayers of this
The control of a milling operation is a problem in imponderables: from the moment that the ore drops into the mill scoop the process becomes
The first step in the identification of a mineral before any chemical tests are made should be the recognition of the physical and optical properties
The data herein has been selected from laboratory notes and incorporates only the usual ore dressing methods in practice for the treatment of common minerals.
A very unique and simple way of measuring or comparing the amount of air that is working its way up through the pulp of any
A small gold mine flowsheet is shown below together with cost data which clearly shows the results that can be ‘obtained when handling a low
Repeated failures in attempts to work gold-bearing gravels by means of suction-dredges have created the impression that this method is impracticable. The suction-dredges have failed
Small mines are almost invariably adit rather than shaft mines, and in most instances ore is trammed directly from mine to coarse ore bin at the