Ultrafine Grinding of Several Industrial Minerals by the Attrition-grinding Process

Hydration-rate Studies of Gypsum Plasters: Effects of Small Amounts of Dissolved Substances, Issue 5417, Part 5597

Recovery of Alumina from Anorthosite, San Gabriel Mountains, California, Using the Lime Soda Sinter Process: With a Section on Geology by Gordon B. Oakeshott, Issues 6241-6295

Report of Investigations: no.7381 to date

Heats and Free Energies of Formation of Gallium Sesquioxide and Scandium Sesquioxide: Issues 5900-5997

Heats and Free Energies of Formation of Vanadium Nitride and Vanadium Carbide: Issues 6161-6180

Sulfur in Lignite: Form and Transformations on Thermal Treatment, Issues 5621-5640

Defluorination of Fluorspar: Preparation of Aluminum Fluoride from Siliceous Fluorspar, Issues 6021-6040

The Nicaro (Cuba) Nickel Ores: Basic Studies, Including Differential Thermal Analysis in Controlled Atmospheres, Issues 5491-5510

Flotation of Beryl from North-eastern Pegmatites: A Progress Report, Issues 5761-5780

Extraction of Manganese from Georgia Umber Ore by a Sulfuric Acid-ferrous Sulfate Process (in Two Parts).: Countercurrent-decantation extraction and agglomeration of leached residue tests. 1

Process Development in Removing Sulfur Dioxide from Hot Flue Gases (in Four Parts).: Laboratory-scale pulverized-coal-fired furnace. 2

Multiple Zone Mining Plus Beneficiation of Western Phosphate Rock: A Cost Estimate and Comparison with Selective Mining, Issues 7501-7520

A One-step Operation for Recovery of Manganese as Chloride from Ores and Slags: 1966

Centrifugal Compressor for High-temperature Helium: Performance Characteristics, Issues 6261-6280

Metallurgical Studies of Rhodonite Ores, Silverton District, Colorado (In Three Parts).: Melting, quenching, and acid leaching of concentrates and electrolytic recovery of manganese from solution. 3