Dissolution of Zinc from Sphalerite at Elevated Temperatures and Pressures: Issues 5846-5851

Acid Curing and Countercurrent Decantation Washing of an Oxidized Copper Ore from Pinal County, Ariz

Radiometric Determination of Uranium in Ores

Oxidation Leaching of Copper Sulfides in Ammoniacal Pulps at Elevated Temperatures and Pressures

Sulfuric Acid from Sulfur Dioxide by Autoxidation in Mechanical Cells

Acid Leaching of Oxidized Copper Ores by Downward Percolation

Oxidation Leaching of Copper Sulfides in Acidic Pulps at Elevated Temperatures and Pressures

Recovery of Zinc from Ammoniacal-ammonium Sulfate Leach Solutions

Operation of a Dithionate-process Pilot Plant for Leaching Manganese Ore from Maggie Canyon Deposit, Artillery Mountains Region, Mohave County, Ariz

Treating Oxidized and Mixed Oxide-sulfide Copper Ores by the Segregation Process

Identification of Sulfur Compounds in Petroleum: Analysis of a Wasson, Texas Crude Oil Distillate Boiling from 1110 to 1500C, Issues 6801-6810

Developing a Thermochemical Model for the Iron Blast Furnace: Model of Ideal Furnace at Equilibrium, Issues 6221-6240

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

Fersmite: A Rare Calcium-columbate Mineral from Montana, Issues 5681-5700

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

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