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Jan 1, 1937

Jan 1, 1916

By R. S. Shoemaker, F. W. McQuiston

Ore Classification / Mine Where Used / Treatment Method Table page

Jan 1, 1975

Jan 1, 1917

Jan 1, 1933

Jan 1, 1936

Jan 1, 1903

Jan 1, 1955

Jan 1, 1928

Jan 1, 1935

Jan 1, 1901

Jan 1, 1936

Jan 1, 1920

Jan 1, 1954

Jan 1, 1918

Jan 1, 1908

Jan 1, 1939

Jan 1, 1939

By J. D. Forrester

Developments of the year make geologist's industrial position even more secure and important-Professional shortage remains acute-

Jan 2, 1953

By J. J. Bodmer

The four different modes, more or less practiced for subdividing slag (that is, producing slag sand), are the following: 1. Crushing the slag from the lump in Blake's crusher, by edge runners or other suitable means. 2. Blowing water, steam, cold or hot air, into the stream of viscous slag whilst it runs from the furnace. So treated, the slag takes