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Jan 1, 1929

Jan 1, 1966

PRESIDENT Mrs Oliver Bowles 5000 Massachusetts Avenue N W. Washington 16, D C FIRST VICE-PRESIDENT RECORDING SECRETARY Mrs David E" Park Mrs Thomas T Read 115 East 67th Street 9 Windmill Lane New York 22, N Y Scarsdale, N Y

Jan 1, 1951

Jan 7, 1951

Jan 1, 1883

Jan 1, 1890

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Jan 1, 1907

Jan 1, 1916

MINERAL INDUSTRY EDUCATION DIVISION Established as a Division January 15, 1932 Harry H. Power, Chairman J R. Van Pelt, Vice-Chairman J. Donald Forrester, Secretary-Treasurer Missouri School of Mines and Metallurgy, Rolla, Mo

Jan 1, 1952

Vice-Chairmen GEORGE D. BARRON, PHILIP N. MOORE, EDWARD H. BENJAMIN, ROBERT H. RICHARDS, FRED H. BOSTWICK, MILNOR ROBERTS. ELI T. CONNER, CARL SCHOLZ. C. R. CORNING, WILLIAM WRAITH, WALTER DOUGLAS, THOMAS T. READ, Secretary, Woolworth Bldg.. New York, N. Y.

Jan 1, 1917

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Jan 1, 1907

By R. L. Mauger, P. E. Damon, B. J. Giletti

On page 85 of the March 1965 issue of Transactions the heading of the third data column of Table II should read Ar40 Atmos %, and the first decay constant at the bottom of the Table should read ?ß.

Jan 1, 1965

Jan 1, 1944

Jan 1, 1947

United Engineering Trustees, Inc. W. D. B. MOTTER, JR., '44 A. L. QUENEAU, '45 ALBERT ROBERTS, '43, President The Engineering Foundation GEORGE D. BARRON, '44 F. F. COLCORD. '46 A. L. QUENEAU, '45, Chairman

Jan 1, 1943

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Jan 1, 1938

[MININQ METHODS WILLIAM J. COULTEB, Chairman PHILIP B. BUCKY, Vice-Chairman LELAND A. WALKER, Vice-chairman ) CLYDE E. WEED. Vice-Chairman CHARLES F. JACKSON, Secretary]

Jan 1, 1946

Jan 1, 1901

Established as Mining, Geology and Geophysics Division, Sept. 27, 1949 Name changed February 19, 1958 Robert J Lacy, Chairman John G Hall, Assistant Chairman Vice-Chairmen Peter Joralemon, Membership J M Ehrhorn, Program John C Wangaard, Publications A W Ness, Secretary American Smelting & Refining Co 600 Crandall Building Salt Lake City 1, Utah

Jan 1, 1960