United States Bureau of Mines Bulletin 3106

Report issued by the U.S. Bureau of Mines on the leaching of copper ores. The different strengths and cycles of solvents to extract impurities from the ore are presented. This report includes tables and graphs

Lead smelting in the ore hearth.

Includes bibliographical references.I. Problems involved in smelting rich charges -- II. The development of the ore hearth : its smelting column -- III. Zonal action in the smelting column.Mode of access: Internet

Smelting in the lead blast furnace : handling rich charges.

Mode of access: Internet

United States Bureau of Mines Bulletin 281

From abstract of Bulletin: "The results of the experiments described in this bulletin are largely a record of the behavior of sponge iron as precipitant of lead and copper under laboratory conditions comparable to those that would obtain in a commercial plant were it attempted to secure the maximum contact of surface between solution and precipitant.

Method for measuring voids in porous materials /

Mode of access: Internet

The dissolution of cuprite in sulfuric acid and in ferric sulfate solution /

Mode of access: Internet

Treating a complex ore : data from experimental work on ores in the Denver laboratories of the Complex ores recovery co. /

Bibliographic references included.Mode of access: Internet