Gravity concentration is a general term designating processes for separating and sorting granular material by means of forces that depend on the density, size and
Several constructive and fundamental studies have been made in the analysis of data obtained from experiments carried on with batch ball and rod mills. The
Acid mine-water drainage is a serious problem with many mines in the Tri-State zinc and lead mining district. Particularly is this true when large volumes
Although the efficiency of coal utilization has improved steadily since the turn of the century as a result of continued research and development, little of
Experiments in the flotation of small diamonds from both kimberlite and alluvial deposits indicate the following conclusions: Water-repellent diamonds: Satisfactory flotation of —16 mesh diamonds,
Sublevel stoping was first developed in the Michigan iron mines many years ago. Since that time this method, and modifications with long hole drilling, have
The correlation of property changes during precipitation with structure has progressed, sometimes rapidly but other times more slowly, since the fundamental discovery of Merica, Waltenberg
Oh, please tell me what is metallurgy? There is no better way of paying tribute to the memory of a scientist than by developing and
During the past few years a radically new process for the magnetic roasting of iron ores has been investigated and developed by Pickands Mather &
The relative performance of coal washing equipment, or the effectiveness with which any type or make of equipment removes impurities from coal, has been most