Recovery Percentage of Bituminous Coal Deposits in the United States (in Two Parts).: Underground mines. Part 1

High-temperature Corrosion Studies: Influence of Yttrium on Oxidation of Nickel at 1,2000 C, Issues 6781-6800

Analyses of Tipple and Delivered Samples of Coal: Collected During Fiscal Year 1967

Analyses of Tipple and Delivered Samples of Coal: Collected During Fiscal Year 1968

Analyses of Tipple and Delivered Samples of Coal: Collected During Fiscal Year 1967

Analyses of Tipple and Delivered Samples of Coal: Collected During the Fiscal Year 1965, Issues 6789-6792

Analyses of Tipple and Delivered Samples of Coal Collected During the Fiscal Year 1963

Analyses of Tipple and Delivered Samples of Coal: Collected During the Fiscal Year 1962

Analyses of Tipple and Delivered Samples of Coal: Collected During the Fiscal Year 1963

Analyses of Tipple and Delivered Samples of Coal Collected During Fiscal Year 1964

Analyses of Tipple and Delivered Samples of Coal: Collected During the Fiscal Year 1962

Lake Superior Iron Resources: Metallurgical Evaluation and Classification of Nonmagnetic Taconite Drill Cores from the West Central Mesabi Range, Issues 6081-6100

Preparation Characteristics of Coal from Tazewell County, Va: Issues 6281-6300

Manganese Resources of the Batesville District, Arkansas (in Three Parts): 3. Field Investigations, July 1956 to June 1961. 1963

Analyses of Tipple and Delivered Samples of Coal: (collected During the Fiscal Year 1952)

Analyses of Tipple and Delivered Samples of Coal: (collected During the Fiscal Year 1951)

Analyses of Tipple and Delivered Samples of Coal: (collected During Fiscal Year 1956)

Engineering-economic Analyses of Coal Preparation with SO2 Cleanup Processes for Keeping Higher Sulfur Coals in the Energy Market: Prepared for Coal Preparation and Analysis Laboratory, U.S. Dept. of Energy

Analyses of Tipple and Delivered Samples of Coal: Collected During Fiscal Year 1954

Analyses of Tipple and Delivered Samples of Coal: Collected During Fiscal Year 1959