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By William B. Plank

For the first time in four years the number of mineral engineering students in the 228 engineering colleges of the U. S. and Canada exceeds 10,000. According to figures just released by the American Society for Engineering Education, the current enrollment of all engineering students is 222,178. The total of 10,274 mineral engineering students, undergraduate and graduate, is a 4% pct increase over a year ago. Total engineering is 11 pct larger than last year, about the same as in 1949-50, and 24 pct above 1950-51.

Jan 4, 1955

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

TECHNICAL COMMITTEES Iron and Steel JOSEPH W. RICHARDS, Chairman. J. E. JOHNSON. Js., Vice-Chairman. ARTHUR S. CALLEN, Secretary, 453 Chestnut St., So. Bethlehem, Pa. SUB-COMMITTEES IRON ORE DWIGHT E. WOODBRIDGE. Chairman. ERNEST F. BURCHARD, WILLIAM KELLY. CHARLES F. RAND, FELIX A. VOGEL. BLAST FURNACES H. A. BRASSERT. Chairman. WILLIAM H. BLAUVELT, AMBROSE N. DIEHL, JAMES GAYLEY, RICHARD V. McKAY.

Jan 10, 1915

[Instead of presenting his paper, as printed, Mr. Rice gave a brief illustrated lecture on the subject, the illustrations being largely maps of the coal fields in several parts of Europe, and graphic diagrams illustrating the production and consumption of coal throughout the world.

Jan 4, 1918

Jan 1, 1934

Organization Place Date 1918 National Society of Naval Architects New York, N. Y. Nov. 14-15 American Society of Mechanical Engineers New York, N. Y. Dec. 3-6 Geological Society of America Boston, Mass. Dec. 28-31 American Association for the Advancement of Science Boston, Mass. Dec. 27¬ Jan. 2. 1919 American Society of Civil Engineers New York, N. Y. Jan. 15-16 American Wood Preservers Association St. Louis, Mo. Jan. 28-30 American Society of Heating and Ventilating Engi¬ neers New York, N. Y. Jan. 28-30

Jan 11, 1918

Jan 1, 1936

By John D. Morgan

THE tense international situation prevailing in the postwar period, and the outbreak of actual hostilities in Korea, directs attention to the status of United States reserves of strategic and critical materials for war. Geologists and mining and metallurgical engineers are particularly interested in this problem, since, with a few important exceptions, almost all of the materials on the official list of strategic and critical materials for stockpiling (see top of page) are metals and minerals.

Jan 3, 1951

By J. S. Ll. Leach, J. B. Cohen, M. B. Bever

IN the work reported here, the heats of formation of a copper-rich Cu-Sn (a) solid solution and of the Cu.Sn (0 phase were measured by tin solution calorimetry. An approximate determination of the heat effect attending the precipitation of 6 from a supersaturated a solid solution was also made.

Jan 1, 1955

EDWARD B. GRUBB, Burlington, N. J.: In connection with the discussion relative to the effect of vibration upon the molecular structure of wrought-iron, I would like to call your attention to the following extracts from a work by William

Jan 1, 1897

By J. W. Parkinson

A coal-cleaning plant's environment can be hazardous to a computer system. The computer must be more reliable than the coal-cleaning plant mechanical processes if it is to help improve clean-coal quality and yield by performing data gathering and process control tasks. This paper discusses coal-cleaning plant environmental hazards and installation philosophies that can protect the computer. Specific reference is made to a computer system installed at the Electric Power Research Institute's Coal-Cleaning Test Facility.

Jan 1, 1983

By F. M. Walters

IN order to isolate the effect of an element on some property of an alloy, the effect of the other alloying elements must be elimi- [ ] nated, either by reducing their quantity to the extent that they may be neglected or by determining the specific effect of each. The success of Grossmann1 in calculating [ ] hardenability from chemical composition by means of factors suggested such a

Jan 1, 1942

Jan 1, 1944

By William R. Taylor

This paper reviews the mining and related legislation history of in situ uranium mining in southwest Texas with emphasis on the last five years. It also reviews the current regulatory process and some of the more critical concerns and concepts relative to containment and restoration of in situ mines.

Jan 1, 1979

Jan 1, 1938

By F. H. Spedding

CONSIDERABLE confusion exists in the literature concerning the phase transformations exhibited by the lighter rare earth metals; namely, lanthanum,1-8 cerium,1,3,5,8,9-15 praseodymium,8 and neodymium.1,8,16,10 To obtain further information

Jan 1, 1958

THE National Safety Council will hold the following ses-sions in the Waldorf-Astoria Hotel, New York, N. Y., on Oct. 2, 3 and 4: Oct. 2. 9.30 A. M. 1. Report of past year committees, by Chairman 2. "Safety Pays," by Howard I. Young, Vice-President, American Zinc, Lead and Smelting Co., Mascot, Tenn. (Discussion) 3. Entertainment 4. "Methods and Results of Improved Foremanship Conferences," by H. A. Gilbertson, Director of Per-sonnel, Lehigh Coal and Navigation Co., Lansford, Pa. (Discussion) 5. Appointment of election and resolutions committees Oct. 3, 9.30 A. M.

Jan 9, 1928

By S. H. Ash

Foreman remains key man in any safety program, as men attracted to the industry must be trained in safety thinking. Diesel engines underground aid safety and widespread use of roof bolting is reflected in reduction of roof-fall fatalities.

Jan 2, 1953

AMERICAN INSTITUTE OF MINING ENGINEERS 29 West 39th Street, New .York, N. Y. PROPOSAL FOR MEMBERSHIP Address Member is hereby proposed by the undersigned, as a Associate Junior Member of the American Institute of Mining Engineers. Signatures of .-' three Members or Associates. Place of birth Year of birth Education, when, where and how acquired, with degrees, if any. " A technical education is not requisite for membership. Dates Please give record of experience on following page with dates; for example, in the form used by "Who's Who In America" and similar publications.

Jan 7, 1917

EXECUTIVE COMMITTEE OF THE BOARD OF DIRECTORS W M Peirce, Chairman Philip Kraft, Vice-Chairman Francis B Foley Hjalmar W Johnson Thomas G Moore ENDOWMENT Cleveland E Dodge, Chairman C F Kelley John D Bradley Harvey S Mudd J Coulter W A Sinsheimer N Eavenson Wilfred Sykes C Jackling Clyde E Weed

Jan 1, 1951