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Jan 1, 1924

Jan 1, 1924

United Engineering Society WILLIAM L SAUNDERS,, President GEORGE H PEGRAM, 1st Vie-president ALFRED D FLINN, Secretary J V W REYNDERS, 2d Vice-president JACOB S LANGTHORN, Treasurer HENRY A LARDNER Assistant treasurer Finance Committee House Committee GEORGE H PEGRAM, Chairman ALFRED D FLINN, Chairman J 'VIPOND DAVIES FREDERICK F SHARPLESS BANCROFT GHERARDI . JOHN H DUNLAP WILLIAM L SAUNDERS CALVIN W RICE W F M GOSS, ex-officio F L HUTCHINSON

Jan 1, 1923

Societies, Boards, Etc , on Which Institute Has Representation United Engineering Society WILLIAM L SAUNDERS, President GEORGE H PEGRAM, 1st Vice-president ALFRED D FLINN, Secretary J V W REYNDERS, 2d Vice-president JACOB S LANGTHORN, Treasurer HENRY A LARDNER, Assistant Treasurer Finance Committee GEORGE H PEGRAM Chairman J VIPOND DAVIES BANCROFT GHERARDI W F M GOSS WILLIAM L SAUNDERS, ex-officio House Committee ALFRED D FLINN, Chairman FREDERICK F SHARPLESS' GEORGE T SEABURYO F L HUTCHINSON CALVIN W RICE

Jan 1, 1923

Following is the personnel of the various society and national committees on which the A I M E is officially represented United Engineering Society Officers of the Board, 1920 JOHN VIPOND DAVIES,, President CALVERT TOWNLEY, 1st Vice-president ALFRED D FLINN,, Secretary WALTER M McFARLAND, 2d Vice-president JOSEPH STRUTHERS, Treasurer Finance Committee House Committee WALTER M McFARLAND Chairman GEORGE H PEGRAM W L SAUNDERS

Jan 1, 1923

Following is the personnel of the various society and national committees on which the A I M E is officially represented United Engineering Society Officers of the Board, 1921 JOHN VIPOND DAVIES, President CALVERT TOWNLEY, 1st Vice-president ALFRED D FLINN, Secretary WILLIAM L SAUNDERS, 2d Vice-president JOSEPH STRUTHERS, Treasurer Finance Committee House Committee CALVERT TOWNLEY, Chairman ALFRED D FLINN, Chairman GEORGE H PEGRAM . H S CROCKER WILLIAM L SAUNDERS BRADLEY STOUGHTON GEORGE M BASFORD CALVIN W RICE F L HUTCHINSON

Jan 1, 1923

Society of Chemical Industry (London), American Section. Foster D. Shell, Secretary, 130 Clinton St., Brooklyn, N. Y. Publications of this Society are not of direct interest in this directory but the address of the Society is listed that the reader may have it on record for reference. Subscription to the Journal (A the Society costs £ 2 10s, or $12.50 at the normal rate of exchange. Individual copies are is 9d, postage extra.

Jan 1, 1933

Society of Economic Geologists, 65 East 56th St., Princeton, N. J. Edward Sampson, Secretary. Publications of the Society constitute a part of "Economic Geology," a semiquarterly journal published by: The Economic Geology Publishing Co., W. S. Bayley, Business Editor, University of Illinois, Urbana, Ill.

Jan 1, 1933

A B Cummins President James C Gray, President-Elect J W Woomer, Past President C E Lawall, Eastern Regional Vice-President Donald W Scott, Central Regional Vice-President H C Weed, Western Regional Vice-President Nathaniel Arbiter, Treasurer John Cameron Fox, Secretary AIME 29 W 39 St New York 18, N Y

Jan 1, 1960

[A. B. Cummins, President James C. Gray, President-Elect J. W. Woomer, Past President C. E. Lawall, Eastern Regional Vice-President Donald W. Scott, Central Regional Vice-President H. C. Weed, Western Regional Vice-President Nathaniel Arbiter, Treasurer John Cameron Fox, Secretary AIME 29 W. 39 St. New York 18, N. Y. D. R. Tone, Assistant Secretary]

Jan 1, 1961

[James C. Gray, President W. B. Stephenson, President-Elect A. B. Cummins, Past-President E. G. Fox, Eastern Regional Vice-President H. C. Weed, Western Regional Vice-President Donald W. Scott, Central Regional Vice-President John Cameron Fox, Secretary 29 W. 39 Street New York 18, N. Y. After September 7, 1961 345 East 47 Street, New York 17, N. Y. D. R. Tone, Assistant Secretary Nathaniel Arbiter, Treasurer]

Jan 1, 1961

Coal Division Industrial Minerals Division Minerals Beneficiation Division Mining, Geology and Geophysics Division Elmer A Jones, President President-elect Will Mitchell, Jr, Past President J B Morrow, Eastern Regional Vice-President G Donald Emigh, Central Regional Vice-President J D Forrester, Western Regional Vice-President R B Ladoo, Treasurer John Cameron Fox, Secretary AIME 29 West 39 St, New York 18, N Y

Jan 1, 1957

Coal Division Industrial Minerals Division Minerals Beneficiation Division Mining, Geology and Geophysics Division OFFICERS AND COMMITTEES S D Michaelson, President J W Woomer, President-elect Elmer A Jones, Past President C E Lawall, Eastern Regional Vice-President G Donald Emigh, Central Regional Vice-President J D Forrester, Western Regional Vice-president R B Ladoo, Treasurer John Cameron Fox, Secretary

Jan 1, 1958

Coal Division Industrial Minerals Division Minerals Beneficiation Division Mining, Geology and Geophysics Division Established as a Society February 26, 1957 OFFICERS AND COMMITTEES J W Woomer, President A B Cummins, President-elect S D Michaelson, Past President C E Lawall, Eastern Regional Vice-President D W Scott, Central Regional Vice-President 3 D Forrester, Western Regional Vice-President R B Ladoo, Treasurer John Cameron Fox, Secretary

Jan 1, 1959

By Larry Diaz

A single stage ball mill-cyclone circuit was extensively tested for its reactions to step changes in three controllable variables: feed rate, water to cyclones, and water to the ball mill. A series of carefully designed tests are to be carried out in order to determine relationships between the various ball mill and cyclone parameters. Cyclone overflow particle size distribution is to be continuously monitored during the tests using an ultrasonic device. Other circuit variables that are to be measured and recorded are feed rate, ball mill mass flow, cyclone feed and overflow densities, cyclone feed sump level, water flows, etc. Once the circuit performance is defined, two types of grinding circuit control systems will be evaluated: (a) mass flow-based; (b) particle size- based. Results obtained by each approach in terms of feed rate and cyclone overflow size distributions are discussed. The high sensitivity of continuous particle size measurements to grinding circuit disturbances is emphasized.

Jan 1, 1971

Established as a Society February 26, 1957 OFFICERS AND COMMITTEES Wayne E Glenn, President Earl M Kipp, President-elect John S Bell, Past President R A Morse, Vice-President W D Owsley, Vice-President Everett G Trostel, Treasurer Joe B Alford, Executive Secretary 6300 North Central Expressway Dallas 6, Texas

Jan 1, 1960

Jan 1, 1969

Jan 1, 1966