Electron Micrographs of Some Unusual Inorganic Fibers

Electron Micrographs of Asbestiform Minerals

Electron Diffraction Study of Garnierite

Replica Electron Microscopic Method for Measuring Knoop Hardness Indentations

Particle Size Distribution of Quartz and Other Respirable Dust Particles Collected at Metal Mines, Nonmetal Mines, and Processing Plants

Evaluation of Methods for Determining Nahcolite and Dawsonite in Oil Shales

Chemical and Physical Characterization of Amosite, Chrysotile, Crocidolite, and Nonfibrous Tremolite for Oral Ingestion Studies by the National Institute of Environmental Health Sciences

Properties of Palygorskite, an Asbestiform Mineral

Bureau of Mines Instrumented Impact Tester: Preliminary Studies, Issues 7661-7670

Bacteria in Mining and Metallurgy: Leaching Selected Ores and Minerals ; Experiments with Thiobacillus Thiooxidans, Issues 5833-5839

Low-temperature Phase Equilibria of Helium-bearing Natural Gases: Exell Gas, Issues 6001-6020

Gasification of Pulverized Coal at Atmospheric Pressure: Discussion of Pilot-plant Development, Study of Process Variables, and Relative Gasification Characteristics of Coals of Different Rank. 1959

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