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New Products Equipment

Jan 2, 1953

Jan 1, 1902

Jan 1, 1918

Jan 1, 1885

Jan 1, 1934

By John F. Blandy

The map on Plate I illustrates a part of the works of the Red Bank Mining Company, on the Upper Freeport seam of coal, in Armstrong County, Pennsylvania. The contour lines give a careful representation of the conformation of the surface, showing also the line of outcrop of the seam, and the gangways of the mines are shown by the black lines. Upon assuming charge of the works in January last, I found that the first and greatest difficulty lay in the great uncertainty of the

Jan 1, 1909

Jan 1, 1945

Jan 1, 1949

Jan 1, 1920

Jan 1, 1902

Jan 1, 1895

To ensure the receipt of the Bulletin, all changes of address must be received before the 20th of the preceding month when the mailing lists must be closed.

Jan 2, 1919

New Products Equipment

Jan 5, 1951

Jan 1, 1908

New Products Equipment

Jan 4, 1951

Jan 1, 1947

Jan 1, 1947

By Herbert Clark Hoover, Lou Henry Hoover

Jan 1, 1950