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[Admissions: Aurel E. Smith, Chairman Edmond F. Egan Lawrence S. Fennell John S. Fuller Howard J. Ritts, Jr. Gene E. Roark Kenneth W. Robbins Ben M. Gottlieb Advertising: Bernard F. Klein, Chairman Henry N. Lyle R. E. Howard H. M. Krause, Jr. Mrs. Evelyn R. Robertson]

Jan 1, 1961

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

Jan 1, 1949

[*DAVID THOMAB ...................... 1871 *R. W. RAYMOND .1872-1874 *A. L. HOLLEY ....................... 1876 *Asurn 8. H~WITT ................... 1876 *T.ST~RYHUNT ..................... 1877 *ECKLBY B. COXB .1878-1879 *WILLIAM P. BHINN .................. 1880]

Jan 1, 1946

No. 243. Superintendent for operating Virginia, manganese mine. One experienced with wet concentration, labor and general management. Opportunity for advancement for right man. Write fully concerning experience, references and salary expected to start.

Jan 11, 1917

For the year ending February, 1916 PRESIDENT WILLIAM L. SAUNDERS,1 NEW YORK, N. Y. PAST PRESIDENTS CHARLES F. RAND,1 NEW YORK, N. Y. BENJAMIN B. THAYER,3 NEW YORK, N. Y. FIRST VICE-PRESIDENT PHILIP N. MOORE,1 ST. Louis, Mo. TREASURER GEORGE C. STONE,1 NEW YORK, N. Y. SECRETARY EMERITUS ROSSITER W. RAYMOND NEW YORK, N. Y. SECRETARY BRADLEY STOUGHTON, NEW YORK, N. Y.

Jan 1, 1916

For the year ending February, 1919 PRESIDENT SIDNEY J. JENNINGS NEW YORK, N. Y. PAST PRESIDENTS L. D. RICKETTS NEW YORK, N. Y. PHILIP N. MOORE ST. Louis, Mo. FIRST VICE-PRESIDENT C. W. GOODALE BUTTE, MONT. TREASURER GEORGE C. STONE, NEW YORK, N. Y. SECRETARY EMERITUS ROSSITER W. RAYMOND, NEW YORK, N. Y. SECRETARY BRADLEY STOUGHTON NEW YORK, N. Y.

Jan 9, 1918

[*E. O'C. Acker '86 Jinzoc Adachl '88 T. H. Aldrich '96 *Truman H. Aldrich '78 Walter H. Aldridge '89 *Anson W. Allen '87 John H. Allen '84 *Thomas Andrews '94 *William R. Analeby '90]

Jan 1, 1946

Jan 1, 1910

PRESIDENT WILLIAM L. SAUNDERS,1 NEW YORK, N. Y. PAST PRESIDENTS CHARLES F. RAND,1 NEW York , N. Y. BENJAMIN B. THAYER,2 . NEW YORK, N. Y. FIRST VICE-PRESIDENT PHILIP N. MOORE,1 ST. Louis, Mo. TREASURER GEORGE C. STONE,1 NEW YORK, N.Y. SECRETARY EMERITUS ROSSITER W. RAYMOND, NEW York, N. Y.

Jan 4, 1915

[Admissions: B. M. Gottlieb, Chairman Edmond F. Egan K. Marshall Fagin John S. Fuller Edward E. Monteith T. A. Pollard Howard J. Ritts, Jr. Kenneth W. Robbins Harold E. Wright Advertising and Exhibits: Bernard F. Klein, Chairman Bob Diggs Brown R. E. Howard H. M. Krause, Jr. R. G. Parker Mrs. Evelyn R. Robertson]

Jan 1, 1961

Jan 1, 1939

E. O?C. Acker Jinzoc Adachi Truman H. Aldrich Walter H. Aldridge Anson W. Allen John H. Allen William R. Appleby W. Lawrence Austin W. S. Ayres David Baker John Henry Banks Henry C. Banon Alonzo F. Bardwell Walter A. Barrows H.C. Bellinger Wm de L. Benedict Robert Bentley John F. Berry Andrew A Blair George D. Blood Charles A. Bohn Walter M. Brodie Elwin F. Brown Fredrick Burbidge H.H. Burden Charles Butters

Jan 1, 1944

University of Alabama University, Alabama Mining and Metallurgical Society WILLIAM S. SPRINGER, President ROBERT E. MEAD, Secretary J. R. CUDWORTH, Faculty Sponsor MILTON H. FIES, Counselor University of Arizona Tucson, Arizona Miners' Society PERCY E. COE, President W. JAMES THOMAS, Secretary E. P. MATHEWSON, Faculty Sponsor B. R. HATCHER, Counselor

Jan 1, 1937

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Jan 1, 1938

Jan 1, 1939

[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

ARIZONA Established July 10, 1915 ROBERT W. THOMAS. Chairman ROBERT W. HUGHES, Vice-Chairman HUBERT O. WOODS, Secretary-Treasurer American Smelting & Refining Co., Hayden, Ariz. LYLE BARKER M. G. FOWLER RICHARD BRITTAIN M: C. HENRIE B. S. BUTLER F. D. 1. HONEYMAN T. G. CHAPMAN J. E. LANNING C. H. COLE A. MENDELSOHN G. C. DAVIS BRENT N. RICHARD E. Ii. DENTZER C. F. WILLIS

Jan 1, 1943

Extractive Metallurgy Division Institute of Metals Division Iron and Steel Division OFFICERS AND COMMITTEES John Chipman, President W R Hibbard, Jr, Past President C C Long, Vice-President T D Jones, Treasurer R W Shearman, Secretary AIME, 29 West 39th Street New York 18, N Y

Jan 1, 1959

By William E. Ford, Edward Salisbury Dana

274. The PHYSICAL CHARACTERS of minerals fall under the following heads : I. Characters depending upon Cohesion and Elasticity - viz., cleavage, fracture, tenacity, hardness, elasticity, etc. 11. Specijic Gravity, or the Density compared with that of water. 111. Characters depending upon Light - viz., color, luster, degree of trans- parency, special optical properties, etc. IV. Characters depending upon Heat -viz., heat-conductivity, change of form and of optical characters with change of temperature, fusibility, etc. V. Characters depending upon Electricity and Magnetism. VI. Characters depending upon the action of the senses-viz., taste, odor, feel.

Jan 1, 1922