RI 3484 Progress Reports - Metallurgical Division - 36. Ore-Testing Studies, 1938-39 (Preliminary Ore-Dressing) - Ore-Testing Studies Of The Ore-Dressing Section - Introduction

In previous reports5/ of ore-testing studies, teats made by established methods on typical ores selected as representative of certain mining districts have been described in considerable detail. In addition to established test procedures, such as screen analysis, Chemical analyses, microscopical examination of ores and products, sink-and-float separation, gravity concentration, floatation, and magnetic separation with or without roasting, it was sometimes necessary to apply other methods, such as leaching, in instances where physical separations were not feasible.