The Links, Inc., Freedom and the Arts, July 1981 (open access)

The Links, Inc., Freedom and the Arts, July 1981

Presented at the 25th Western Area Conference, this booklet contains reports of chapter activities of the Western Area division related to the arts, service to youth, and national and international issues of concern. The conference is a biennial meeting of chapters of The Links, Inc. located in the western United States.
Date: July 1981
Creator: Links, Inc. Western Area.
System: The Portal to Texas History
Innovations in Copper Leaching Employing Ferric Sulphate-Sulphuric Acid (open access)

Innovations in Copper Leaching Employing Ferric Sulphate-Sulphuric Acid

From Introduction: "The Bureau of Mines has attempted to develop a cheap and efficient solvent that would especially meet the requirements of smaller plants. (See Bibliography). A method of producing this solution from sulphurous products and waste liquors was developed by the bureau and tried successfully on a test-plant scale at the Southwest Experiment Station in cooperation with the department of mining and metallurgy, University of Arizona, Tuscon, Ariz."
Date: 1930
Creator: Keyes, Harmon E.
System: The UNT Digital Library