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By John D. Welsh

Jan 1, 1985

Jan 1, 1934

Jan 1, 1965

By R. H. Terhune

THE enormous production of pig-iron, together with the many difficult and interesting problems with which its manufacture is fraught, has secured to this industry the exclusive attention of scientists with reference to the chemistry of iron, while some of the minor departments of its metallurgy have suffered neglect. Particularly is

Jan 1, 1873

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

Mineral Occurrence Treatment Method Table Page

Jan 1, 1975

Jan 1, 1928

Jan 1, 1938

Jan 1, 1938

By AIME AIME

M R. WEIGEL'S present position as Chairman of the Institute's nonmetallics group arises from twenty years of experience in that field, from 1921 to 1926 as mineral technologist for the Bureau of Mines, in Washington, and since then for the Missouri Pacific R.R. Co., with headquarters in St. Louis. This rail- road serves an extensive region in and about the southern central states, from Omaha to the extreme southern tip of Texas, and from southern Illinois to Pueblo, Colorado, and it is Mr. Weigel's job to get as much freight for the road as possible from the mineral industry in this area. Much of the present and potential mineral production is in the non- metallic group.

Jan 1, 1940

Jan 1, 1949

Jan 1, 1949

Jan 1, 1939

Jan 1, 1949

Jan 1, 1930

Jan 1, 1942

Jan 1, 1949

Jan 1, 1943

Jan 1, 1927

Jan 1, 1909

Jan 1, 1916