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Executive J V W. REYNDERS, Chairman WILLIAM H. BASSETT E DEGOLYER H C BELLINGER RICHARD PETERS. JR. Finance H. A. GUESS GEORGE OTIS SMITH, Chairman F. JULIUS FONS Admissions GEORGE D. BARRON, Chairman DAVID LEVINGER P. A MOSMAN El K MASTERS J. A. SINGMASTIIR Alternates F. G. BREYER C W HAMILTON F. E PIERCE

Jan 1, 1923

[President MRS. REED W. HYDE 84 Mountain Ave. Summit, N. J. First Vice-President MRS. WILLIAM A. SCHEUCH 37 Trent St. Great Kills, S. I., N. Y. Second Vice-President MRS. RUSSELL B. PAUL 6 Brooklands Bronxville, N. Y. Third Vice-President MRS. JOHN C. BURTON 271 Fox Meadow Rd. Scarsdale, N. Y. Fourth Vice-President MRS. DANIEL C. JACKLING Redwood City R. F. D., Woodside, Calif.]

Jan 1, 1940

By William M. Bowron

An interesting calculation was made at the Chattanooga Meeting of 1885 as to the cost of making a ton of pig-iron in the Chatta-

Jan 1, 1889

[Officers and Committees of the Society of Petroleum Engineers 1 Officers and Staff of the AIME 2 Officers of AIME Sections. Predominantly Petroleum in Membership 3 Alphabetical List of Members 5 Geographical List of Members 95 Advertisers' Index 122]

Jan 1, 1961

Jan 1, 1951

Mining Methods LUCIEN EATON, Chairman S. R. ELLIOTT, Vice-chairman CHARLES W. WRIGHT, Secretary Alluvial Mining CLINTON BERNARD CHARLES JANIN O. J. EGLESTON CHARLES H. MUNRO NORMAN L. WIMMLER Open-Cut Mining Iron MAX H. BARBER J. A. MACKILLICAN Copper W. S. BOYD MICHAEL CURLEY R. B. TEMPEST

Jan 1, 1932

[Acker Drill Co., Inc. 1267 Bauer Advertising Inc. Allen & Co. Ltd., Edgar 1275 Allen-Sherman-Hoff Pump Co. Third Cover Dee Carlton Brown, Advertising Allis-Chalmers Mfg. Co. 1116 Compton Advertising, Inc. Allis-Chalmers Mfg. Co., Tractor Div 1131 Bert S. Gittins American Cyanamid Co. 1117 James J. McMahon, Inc. American Manganese Steel Div., American Brake Shoe Co. 1130, 1160 Fuller & Smith & Ross, Inc. Anaconda Copper Mining Co. 1173-1174 Kenyon & Eckhardt Inc. Atlas Car & Mfg. Co., The 1279]

Jan 1, 1952

By General Meigs

I do not know that I can do any more than to express my entire concurrence in the views which have. been already expressed by Mr. Macdonald. It appears to me that he has we over the wholz subject. I might add in regard to appealing to the Govern-

Jan 1, 1882

Jan 1, 1934

[Admissions: H. J. Gruy, Chairman Kenneth W. Robbins W. Frank West Aurel E. Smith R. F. Madera Tom G. Calhoun Kenneth F. Anderson B. M. Goltlieb Advertising: Clark R. Edgecomb, Chairman Bernard F. Klein. Henry N. Lyle R. E. Howard H. M. Krause, Jr. Education: R. L. Whiting, Chairman John M. -Campbell E. T. Guerrero Don D. Little J. C. McCarthy Frank G. Miller Douglas Ragland H. C. Slider R. L. Slobod]

Jan 1, 1961

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, 1943

PRESIDENTS DAVID THOMAS 1871 R W RAYMOND 1872-1874 A L HOLLEY1875 ABRAM S HEWITT 1876 T STERRY HUNT 1877 ECKLEY B COXE 1878 - 1879 WILLIAM P SHINN 1880 WILLIAM METCALF 1881 RICHARD P ROTHWELL 1882 ROBERY W HUNT 1883 JAMES C, BAYLES 1884-1885 ROBERT H RICHARDS 1886 THOMAS EGLESTON 1887 WILLIAM B POTTER 1888 RICHARD PEARCE 1889 ADAM S HEWITT 1890 JOHN BIRKINBINE 1891-1892 H M HOWE 1893

Jan 1, 1923

By G. A. Yuko, J. W. Barton, J. G. Parr

ALTHOUGH previous work1 has shown the compo- sition range of the complex face-centered cubic phase,2 Ti2Ni, to be narrow, no precise limits were established. The purpose of this investigation was to prepare homogeneous alloys on either side of the stoichio-

Jan 1, 1959

By G. H. Kennedy

CYCLONE thickeners are "hydraulic centrifuges" designed either to produce a maximum practical separation between the water and solids of a feed slurry or to classify the slurry solids according to particle settling rate. The possibilities of utilizing the thickener to "close" plant water circuits have been investigated.

Jan 3, 1951

IRON AND STEEL DIVISION Established as a Division February 22, 1928 K C. McCutcheon, Chairman T. L. Joseph, Past Chairman J B Austin, Vice-Chairman E K Miller, Vice-Chairman T. J. McLoughlm, Vice-Chairman Ernest Kirkendall, Secretary-Treasurer CO M M I T T E E S EXECUTIVE J. A. Bowers '54 J. S. Marsh '55 R. W. Campbell '54 D. L. McBride '53 Walter Carroll '55 G. B. McMeans '53 K. L Fetters '53 F. L. Toy '54 H. M. Griffith '55

Jan 1, 1952

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Jan 1, 1938

ENGINEERS AVAILABLE (Under this heading will be published notes sent to the Secretary of the Institute by members or other persons.) Recent graduate desires position as surveyor or assistant to mining geologist. No. 112. Member, technical graduate with varied experience covering milling, cyaniding, plant design, mill and dam construction, underground work, and executive, examination and reporting on mining properties, desires position as superintendent of gold and silver property in United States or Latin America. No. 113.

Jan 7, 1914

My question relates to tundish nozzle plugging on aluminum-killed heats. North Star has avoided this problem by silicon deoxidation. What has been Inland's experience with this problem on open-pour and submerged nozzle pouring?

Jan 1, 1972

By James T. Curry

FACED with processing an increasing volume of raw material through its existing plant, early in 1955 Calaveras Cement Co. of California considered incorporating liquid cyclones in its raw mill grinding circuits. One of many problems was the prospect of handling larger volumes of finished slurry through existing pipelines. Fixed capacities of the mechanical classifiers also placed limits on plant expansion.

Jan 10, 1957

Most lead-zinc mines worldwide have moved to further mechanized techniques to boost productivity, improve safety, and lower costs. The mining session, chaired by S. C. Fall, NL. Industries, and C. J. Beattie, Callahan Mining Co., reviewed mining methods at five operations in the US, Australia, Peru, and Japan. Where massive sulfide-type and irregular ore bodies are encountered, resourceful operators have modified and varied the mining method with the localized ore zones. In all cases, mechanization of operations has registered gains in productivity.

Jan 11, 1977