For years past I have traveled in quest of promising mining- properties, over almost impassable mountain-trails to remote places in the mining-regions, usually many miles
Under the title, Labor-Saving Appliances in the Works-Laboratory, I published a paper in which was described how multi-manipulations in a works-laboratory and in the furnace-room
Those who have had occasion to sample a mine not infrequently find that it is impossible to take their sample cuts at regular distances apart,
Some time ago, we had to decide the question whether it would pay to re-treat slime-tailings, and several machines were tested in order to ascertain the
In discussing the crystallization of a granitic magma it is sometimes assumed that there is a simple pro rata increase of the water content of
The scope of this paper is the description of two districts in Peru in which vanadium deposits have been found, and the consideration of much laboratory-work
From the old-fashioned “ grab-sample ” to the modern timing- device, which takes a machine-sample with mathematical precision, there is a wide gap, which was
The Hammond Mining and Metallurgical Laboratory and its Equipment was the gift of Prof. John Hays Hammond to the Sheffield Scientific School of Yale University. Professor Hammond
The design and specifications submitted in this paper are not offered as satisfying all conditions of gold dredging. Many rich stream-beds would not give “
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 hydraulic gold