In 1947 the author became interested in the fundamental aspects of the desilverizing of lead by zinc, conducted some experimental work, and searched the technical
In 1947 an Industrial Hygiene Department was organized to represent and assist the four western mining divisions in industrial hygiene problems. Department headquarters are located
Sizing is the process of separating mixed particles into groups of particles all of the same size, or into groups in which all particles range
Granitic pegmatite deposits are the chief source of commercial feldspar, sheet mica, beryllium, tantalum-columbium, and lithium minerals, and certain types of kaolin. They also
In general, the beneficiation of sand and gravel consists of the removal of certain low specific gravity deleterious particles from the sand and gravel. These
Lightweight aggregates have been in use for many years in the United States but are now receiving more and more attention by manufacturers and users
Commercial beds of sylvite ore were discovered by the Snowden & McSweeney Co. while drilling a wildcat oil well some 25 miles northeast of Carlsbad,
How much can the mine operator afford to spend on his coal burning boiler plant? The usual answer is as little as possible and still
One of the chief difficulties with which the operator of a coal washing plant has been forced to contend is the handling of the very
The problem of producing a uniform, medium-fine sand for glass-furnace feed has been of interest to the glass-container industry for many years. In the present