Ultrafine Grinding of Several Industrial Minerals by the Attrition-grinding Process: Issues 7641-7656

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

Reservoir Oil Characteristics, Greater Aneth Area, Utah: Unusual Saturation-pressure Variations, Issues 6181-6200

Transformations of the Elastic Constants for Anisotropic Media by Successive Simple Rotations

Heats and Free Energies of Formation of Germanium Dioxide

Report of Investigations: no.7381 to date

Delineation of Fractures in Igneous Rock Masses Using Common Offset Radar Reflection

A Study of Anodes for Electrolytic Manganese

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

A Method of Obtaining the Ultraviolet and Visible Spectra of Insoluble Materials: Use of a Low-molecular-weight Polyethylene as a Matrix Material, Issues 6421-6440

Stresses Induced Around Mine Development Workings by Undercutting and Caving, Climax Molybdenum Mining, Colorado (in Two Parts).: Strain and deformation measurement. 2

A Microscope System Using Automated Reflectance Scanning to Study Coal Components: Application to Analysis of Pyrite Distribution, Issues 7241-7260

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

Simulated Nuclear Reactor System for High-temperature Process Heat: 1,000-hour Demonstration Run at 2,500 F., Issues 5881-5900

In-situ Measurement of Rock Deformation in a Vein-type Deep Mine (in Two Sections).: Instrumentation and techniques. Analysis of measurements in the Star Mine, Burke, Idaho. 1. 2

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

Heats and Free Energies of Formation of Ferrites and Aluminates of Calcium, Magnesium, Sodium, and Lithium: Issues 5707-5713

Investigation of Fire and Explosion Accidents in the Chemical, Mining, and Fuel-related Industries: A Manual, Issues 678-688