Search U.S. government technical reports digitized or harvested by TRAIL.
Solvent extraction of coals by abietic acid at atmospheric pressure
Low-temperature carbonization assays of coals and relation of yields to analyses
Analyses of tipple and delivered samples of coal :(collected during the fiscal year 1960)
Using a centrifuge for float-and-sink testing fine coal
Analyses of tipple and delivered samples of coal :collected during fiscal year 1961
Coking-rate study on a commercial blend of western coals
Analyses of tipple and delivered samples of coal :collected during the fiscal year 1962
Advances in coal spectrometry :mass spectrometry
Densimetric method in studying coal and coke structure
Bulk density studies on a commercial blend of western coking coals
Analyses of tipple and delivered samples of coal :collected during the fiscal year 1963
Influence of certain processing variables on the determination of moisture in coal
Heat content and specific heat of coals and related products
Analyses of tipple and delivered samples of coal collected during fiscal year 1964
Phosphorus, chlorine, sodium, and potassium in U.S. coals
Reaction of coal in argon and argon-hydrogen plasmas
Analyses of tipple and delivered samples of coal :collected during the fiscal year 1965
Sulfur content of United States coals
Direct determination of oxygen in coal
Method for determination of fluorine in coal
Electrochemical reduction of coal
Chemical reactions produced by exposing coal derivatives to ultrasonic energy
Chloroform extractions of coals and chars
Spectrochemical analysis of coal ash
Analyses of tipple and delivered samples of coal :collected during fiscal year 1967
Analysis of mineral matter in coals by x-ray fluorescence
Colorimetric method for arsenic in coal