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Jan 1, 1913

Mining Methods J. MURRAY RIDDELL, Chairman Guy N. BJORGE, Vice -chairman Alluvial Mining CLINTON BERNARD BENERE H. GRANT H. R. NORSWORTHY

Jan 1, 1937

President MRS. FREDERICK LAIST 24 Tompkins Road Scarsdale, N. Y. First Vice-president MRS. LOUIS D. HUNTOON Pleasantville New York Second Vice-president MRS. REED W. HYDE 84 Mountain Avenue Summit, N. J. Third Vice-president MISS MADELINE P. STONE 49 West 11th St. New York, N. Y. Fourth Vice-president MRS. JOHN J. LINCOLN Elkhorn, McDowell Co. West Virginia

Jan 1, 1932

PRESIDENT PHILIP N. MOORE, ST. Louis, Mo. PAST PRESIDENTS WILLIAM L. SAUNDERS NEW YORK, N. Y. L. D. RICKETTS NEW YORK, N. Y. FIRST VICE-PRESIDENT SIDNEY J. JENNINGS NEW YORK, N. Y. TREASURER GEORGE C. STONE NEW YORK, N. Y.

Jan 1, 1917

Jan 1, 1941

Jan 1, 1913

Jan 1, 1947

Jan 1, 1890

By J. C. Fisher

THE following facts are reasonably well established concerning the influence of boron on the hardenability of steel:1-4 1—Boron does not appreciably influence the ther-

Jan 1, 1955

By W. Rostoker

LAVES and Wallbaum1 and more recently Duwez and Taylor' have reported on the occurrence of a family of intermediate phases having the composition Ti2X, where X may be Cu, Ni, Co, Fe, or Mn.

Jan 1, 1953

New Products Equipment

Jan 5, 1953

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Jan 1, 1946

Jan 1, 1935

Jan 1, 1935

STANDING COMMITTEES Executive-A. R. LEDOUX, chairman. Membership-GEORGE C. STONE, chairman. Finance-J. V. N. DORR, chairman. Library-E. GYBBON SPILSBURY, chairman. Papers and Publications--BRADLEY STOUGHTON, chairman. Nominations-POPE YEATMAN, chairman.

Jan 9, 1919

President-Mrs John R C Mann, 90 Edgemont Road, Scarsdale, N Y First Vice-President-Mrs Earl H Bunce, Residence Park, Palmerton, Pa Second Vice-President-Mrs. W Clifford Bowden, Jr, 800 Midland Road, Oradell, N J Third Vice-President-Mrs F Edgar Kudlich, 521 Rutter Ave, Kingston, Pa

Jan 1, 1958

Mellon Institute of Industrial Research, University of Pittsburgh, Pittsburgh, Pa. The Mellon Institute of Industrial Research has carried on for years research and investigations for all type and manner of indus¬try. One of the provisions of the foundation of the Institute is the

Jan 1, 1933