Iron Extraction from Simulated Aluminum Nitrate Leach Liquor: Issues 8634-8646

Analysis of Steelmaking Slags by Atomic Absorption Spectrophotometry Using Pressure Dissolution: 1978-1979

Benefication of Western Mesabi Range Oxidized Taconites: A Comparison of the Anionic and Cationic Flotation Systems and an Evaluation of Potential Iron Ore Reserves, Issues 8541-8560

Evaluation of Technology for the Recovery of Metallurgical-grade Alumina from Coal Ash

Naphthenic Acid Solvent Extraction of Rare-earth Sulphates

Recovery of Cerium and Lanthanum by Ozonation of Lanthanide Solutions

Recovery and Separation of Rare-earth Elements, Barium, and Strontium from Bastnäsite with Sulfuric Acid

Differential Extraction of Rare-earth Elements in Quaternary Ammonium Compound-chelating Agent Systems

Recovery of Alumina from Anorthosite by an HC1-F-gas Sparging Crystallization Process: Issues 8806-8818

Aluminum Extraction from Anorthosite by Leaching with Hydrochloric Acid and Fluoride

Recovery of Aluminum Hydroxy Sulfate from Aluminum Sulfate Solution by High-temperature Hydrolysis

Extraction Process for Upgrading Sm2O3 Using Selective Stripping Techniques

Extraction Behavior of Cerium-group Lanthanides in a Primary Amine-chelating Agent System

A Strong Acid-weak Acid Method for Producing Aluminum Chloride Hexahydrate from Kaolinitic Clay

Hydrogen Chloride Sparging Crystallization of Aluminum Chloride Hexahydrate

Recovery of Mercury from Cinnabar Ores by Electrooxidation: Extraction Plant Amenability Tests, Issues 8081-8100

Crystallographic Modifications and Phase Transformation Rates of Five Rare-earth Sesquioxides: Lanthanum Oxide, Neodymium Oxide, Samarium Oxide, Europium Oxide, and Gadolinium Oxide, Issues 6601-6620

Report of Investigations: no.7381 to date

Monitoring Ground Movements Near Caving Stopes: Methods and Measurements, Issues 8581-8600

Operating a Pressure-gasification Pilot Plant Using Pulverized Coal and Oxygen: Effect of Heat Loss on Economy, Issues 5941-5960