Extensive literature, published during recent years, identifies three general methods of fine-particle preparation: (1) solution techniques, (2) vapor-phase techniques, and (3) salt decomposition techniques. Solution
The discovery of low-grade gold-silver deposits in the United States has resulted in construction of several cyanide-leach carbon-in-pulp (CIP) milling facilities. Gold and/or silver ores
Abandoned mines are a recurring problem for today’s mining industry. In coal, metal, and nonmetal mining they pose a safety hazard if current workings intercept
EF1 – Dry Grinding – for the same range of work, dry grinding requires 1.3 times as much power as wet grinding. EF2 –
In the 1940’s, we visited hydraulic and dredge mining operations in Alaska and California. He also reviewed 10 yr of accident data pertinent to such
The Florida phosphate industry currently produces more than 80% of the total U.S. supply of phosphate rock. The production of this critical mineral is accompanied
Acid mine drainage is one of the most persistent industrial pollution problems in the United States. Over 5,000 miles of our country’s streams and rivers