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United Engineering Trustees, Inc. GEORGE D. BARRON WILLIAM H. BASSETT R. M. ROOSEVELT The Engineering Foundation GEORGE D. BARRON H. C. BELLINGER E. DEGOLYER Engineering Societies Library Board ROBERT PEELE PHILIP W. HENRY H. K. MASTERS A. B. PARSONS, Ex-officio R. H. SWEETSER

Jan 1, 1932

Executive. CHARLES F. RAND, Chairman. JAMES F. KEMP, JOSEPH W. RICHARDS, ALBERT R. LEDOUX, BENJAMIN B. THAYER. Membership. BENJAMIN B. THAYER, Chairman. WALTER R. INGALLS, JOHN H. JANE WAY, JR., JOHN D. IRVING, HERMAN A. PROSSER. Finance. EDWARD L. YOUNG, Chairman. KARL EILERS, JAMES GAYLEY.

Jan 4, 1913

Mining Methods LUCIEN EATON, Chairman S. R. ELLIOTT, Vice-chairman CHARLES W. WRIGHT, Secretary Alluvial Mining CLINTON BERNARD CHARLES JANIN O. J. EGGLESTON CHARLES H. MUNRO N. L. WIMMLER Open-cut Mining Iron MAX H. BARBER J. A. MACKILLICAN KENNETH DUNCAN W. R. VAN SLYKE

Jan 1, 1932

NEW MEMBERS The following list comprises the names of those persons who became members during the period of May 10, 1918, to June 10, 1918. ABEEL, GEORGE H., JR., Cons. Min. Engr., .4111 Lafayette Ave., St. Louis, Mo. ALLEN, CARL A Metal Min. Engr., U. S. Bureau of Mines, Butte, Mont. BECKER P. FRANK Engr., Lightner Min. Co., 35 Nassau St., New York, N. Y. BOCK, JAMES H., Steam Shovel Foreman, Chino Copper Co., Santa Rita, N. M. CARRON, FRANK X., Civ. and Min. Engr Rock Springs, Wyo. CROWE, THOMAS B., Mill Supt., Portland Mill, Portland Gold Min. Co., Victor, Colo. DOBSON, PERCY GRENSIDE, Min. Engr. and Geol., Crow's Nest Pass Coal Co., Fernie B. C., Canada. ESTABROOK, W. H., Capt., 3d Bat. 20th Engineers, A. E. F., Care postmaster, N.Y. FRASER, 0. B. J., Engr., International Nickel Co. of Canada, Ltd., Port Colborne, Ont., Canada. GARRIDO,. MANUEL F., Min. Engr 109 W. Myrtle St., San Antonio, Tex. GRODSKY, VLADIMIR ALEXANDROVITCH, Cons. Engr., Motor Products Corpn., Detroit, Mich.

Jan 7, 1918

Executive Committee, Board of Directors Howard C Pyle, Chairman, J L Gillson, Vice¬Chairman, A W Thornton, Elmer A Jones, Augustus B Kinzel Finance Committee, Board of Directors J S Vanick, Chairman, John P Hammond, J W Woomer Investments Gail F Moulton, '60, Chairman, Andrew Fletcher, '62, John M Lovejoy, '61, C R Dodson, ex off as AIME Treasurer, J S Vanick, ex off as Chairman of Finance Committee Endowment Andrew Fletcher, Chairman, N G Alford, W J Coulter, Harold Decker, J V N Dorr, R B Gilmore, J B Haffner, Kenneth Hill, 0 H Johnson, J D MacKenzie, D H McLaughlin, J R McMillan, W S Morris, L F Reinartz, H DeWitt Smith, Wilfred Sykes, J R Suman, C E Weed Honorary Memberships C E Reistle, Jr, '60, Chairman, Grover J Holt, '61, Augustus B Kmzel, '62, (ex off as Past Presidents of AIME) M L Haider, '60, D H McLaughlin, '61, John M Lovejoy, '62, L F Reinartz, '63, Howard C Pyle, ex off as President of AIME

Jan 1, 1959

In preparation for the 118th meeting, New York, Feb. 17 to 20, 1919, the following committees have been appointed: Committee on Arrangements ALLEN H. ROGERS, Chairman. W. S. Dickson, Secretary. J. E. JOHNSON, JR. F. T. RUBIDGE. P. G. SPILSBURY. H. C. PARMELEE. FOREST RUTHERFORD. Committee on Annual Dinner Committee on Luncheon F. T. RUBIDGE. FOREST RUTHERFORD, Chairman. E. B. STURGIS. E. MALTBY SHIPP. Committee on Patriotic Meeting H. C. PARMELEE, Chairman

Jan 10, 1918

By Barry K. McMahon

Following minor slope failures at the commencement of mining the west wall of the Kanmantoo Mine was redesigned from an overall slope between haul roads of 55° to 46°. This decision was based on a probabilistic analysis which indicated that 46° was the optimum economic slope.

Jan 1, 1983

COMMITTEES Committee on Arrangements DAVID H. BROWNE, Chairman BRADLEY STOUGHTON, Vice-Chairman LAWRENCE ADDICKS BURR A. ROBINSON PERCY E. BARBOUR E. MALTBY SHIPP GEORGE D. BARRON JOSEPH STRUTHERS J. V. N.. DORR E. B. STURGIS J. R.. FINLAY T. T. READ Louis D. HUNTOON R. H. VAIL

Jan 4, 1916

[1-Iron and Steel JOHN A. MATHEWS, Chairman RALPH H. SWEETSEH. Vice-chairman WILLIAM CAMPBELL. Vice-chairrmn MAX ROESLER, Secretary Iron Ore R C. ALLEN W. 0. HOTCHKISS MAX ROESLER ERNEST F. BURCHARD THOMAS T. READ DWIGHT E. WOODBRIDGE M. M. DUNCAN WILLIAM KELLY CARL ZAPFFE]

Jan 1, 1928

[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 J. D. Forrester, Western Regional Vice-President R. B. Ladoo, Treasurer John Cameron-Fox, Secretary]

Jan 1, 1961

At the annual meeting of Southern California Section, held on May 28, the following officers were elected: Chairman, W. F. Staunton, vice-chairman, L. C. Mott, secretary-treasurer, A. B. Carpenter; executive committee, J. W. Neill, C. Colcock Jones, Mead Goodloe. ALVIN B. CARPENTER, Secretary-Treasurer.

Jan 8, 1919

University of Alabama University, Alabama Mining and Metallurgical 'Society JOHN MADDOCK, President WAYNE WEST, Secretary J. R. CUDWORTH, Faculty Sponsor RICHARD L. BOWRON, Counselor University of Arizona Tucson, Arizona - Miners' Society CLYDE LOVING, President THEODORE BROOKs, Secretary A. J. THOMPSON, Faculty Sponsor E. D. GARDNER, Counselor,,

Jan 1, 1941

MINING ASSOCIATION OF UNIVERSITY OF CALIFORNIA At a meeting of the Mining Association of the University of California, held May 22, .the .following officers were elected for the fall, semester: President, Sam Grinsfelder; vice-president, Marcus. Peterson; secretary, Ferdinand Trescher; treasurer, Carlton Hulin. F. G. TRESCHER, Secretary.

Jan 8, 1919

PRESIDENTS DAVID THOMAS 1871 R W RAYMOND 1872 R W RAYMOND 1873 R W RAYMOND 1874 A L HOLLEN 1875 ABRAM S HEWITT 1876 T STERRY HUNT 1877 ECKLEY B COXE 1878 ECKLEY B COXE 1879 WILLIAM P SHINN 1880 WILLIAM METCALF 1881 RICHARD P ROTHWELL 1882

Jan 1, 1910

PRESIDENTS DAVID THOMAS 1871 R W RAYMOND 1872 R W RAYMOND 1873 R W RAYMOND 1874 A L HOLLEN 1875 ABRAM S HEWITT 1876 T STERRY HUNT 1877 ECKLEY B COXE 1878 ECKLEY B COXE 1879 WILLIAM P SHINN 1880 WILLIAM METCALF 1881 RICHARD P ROTHWELL 1882

Jan 1, 1910

Established as a Society February 26, 1957 John S Bell, President Wayne E Glenn, President-elect Basil P Kantzer, Past President R E Howard, Vice, President M B Penn, Vice-President Everett G Trostel, Treasurer Joe B Alford, Executive Secretary 800 Fidelity Union Bldg Dallas 1, Texas

Jan 1, 1959

By Edward Steidle

OUR citizenry must comprehend the cold, fundamental, economic truth that the ability to create wealth depends upon primary wealth; that only primary wealth can insure our economy, liquidation of our debts, national solvency, national security. And irreplaceable minerals furnish a major part of all primary wealth.

Jan 7, 1950

By Paul M. Tyler

Higher freight rates and better methods of beneficiation now may make it more economical to open inferior deposits closer to a glass factory than to work higher-grade deposits farther away. Nature of impurities and special treatments as well as common practice of sulphuric acid leaching are described.

Jan 11, 1950

Executive JOHN R. SUMAN, Chairman PAUL D. MERICA, Vice-Chairman CHESTER A. FULTON W. M. PEIRCE H. Y. WALKER Finance H. T. HAMIL'T'ON, Chairman ERLE V. DAVELER HENRY KRUMB Admissions FELIX E. WORMSER, Chairman GEORGE D. BARRON, Vice-Chairman PHILIP KRAFT EDWARD MEAGHER CLYDE E. WILLIAMS

Jan 1, 1941

Established as a Division December 15, 1948 Evan Just, Chairman Richard J Lund, Past Chairman Granville S. Borden, Vice-Chairman J K Richardson, Vice-Chairman S H Williston, Vice-Chairman Allan Matthews, Secretary-Treasurer National Security Resources Board 17th and Pennsylvania Ave, N W Washington 25, D C

Jan 1, 1952