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 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 1968

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 1956)

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 Fiscal Year 1954

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

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 1953)

Analyses of Tipple and Delivered Samples of Coal: (collected During the Fiscal Year 1960)

Analyses of Tipple and Delivered Samples of Coal: Collected During Fiscal Year 1961

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 1954

Analyses of Tipple and Delivered Samples of Coal: (collected During the Fiscal Year 1958)

Analyses of Tipple and Delivered Samples of Coal: (collected During Fiscal Year 1955)

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