Search U.S. government technical reports digitized or harvested by TRAIL.
Review of Bureau of Mines coal program, 1967
Limestone resources in western West Virginia
Magnetic susceptibility of group IVB, VB, and VIB metal-bearing minerals
Miniature oxygen deficiency alarm
Computer usage for evaluation of design parameters and cost of heat exchangers.
Analyses of natural gases, 1967
Hydraulic mining of anthracite :analysis of operating variables
Silver recovery from waste photographic solutions by metallic displacement
Nonpyritic smelting of copper concentrates
Tungsten whiskers by vapor-phase growth
Evaluation of synthetic organic flocculants in the treatment of coal refuse slurries
Limits of flame propagation of coal dust-methane-air mixtures
Evaluation of continuous recording X-ray ash meter
Modified Redlich-Kwong equations for hydrogen and for neon
Extraction behavior of cerium-group lanthanides in a primary amine-chelating agent system
Predicted results of cleaning Appalachian coals at low density for sulfur reduction
Two borehole photograph goniometers
Determination of the heat of formation of vanadium trichloride
A method of measuring surface texture of rock
Measurement of oleic acid on mineral surfaces using a radioactive tracer
Dependence of coking time on coal properties and carbonization parameters
Changes in breaking strength of model rock pillars resulting from end constraint
Analyses of tipple and delivered samples of coal :collected during fiscal year 1967
Analyzing midget impinger dust samples with an electronic counter
A high-temperature, two-phase extraction technique for tungsten minerals
Ferrite control by cobalt additions to a semiaustenitic stainless steel
Sampling and analysis of flue gas for oxides of sulfur and nitrogen
Recovery percentage of bituminous coal deposits in the United States (in two parts).
Dewatering coal flotation tailing by the admixture of crushed washery refuse
Optical properties of glass :transmission losses of eyepieces used in mine environment
Vapor pressures of liquid molybdenum (2,890⁰ to 2,990⁰ K) and liquid zirconium (2,229⁰ to 2,795⁰ K)
Kinetics of formation of carbon dioxide and carbon from carbon monoxide in presence of iron pellets
Physical strength of iron ore pellets at elevated temperatures
Liquidus temperatures of titaniferous slags (in three parts).
Oil yields of Green River oil shale from Colorado Corehole No. 1
Extraction of 8-hydroxyquinoline complexes of trace elements from tungsten solutions
High-temperature heat contents and entropies of dehydrated analcite, kaliophilite, and leucite
Revegetation studies at three strip-mine sites in north-central Pennsylvania
Performance of open-circuit self-contained breathing apparatus at -25⁰ F
Investigation of flame propagation characteristics in layered gas mixtures
Recovery of alumina and iron from Pacific Northwest bauxites by the Pedersen process
Kinetics of the initial reduction stages of magnetite in hydrogen
Parameters affecting reduction-induration of unfired magnetite pellets
Methods for producing alumina from anorthosite :an evaluation of a lime-soda sinter process
Performance of the hydrocyclone as a fine-coal cleaner
Piezoelectric pulsing equipment for shear wave velocity measurements in rock samples