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[United Engineering Society ARTHUR S. DWIGHT J, VIPOND DAVIES J, V, N. DORR Engineering Societies Library Board SYDNEY H. BALL ALEXANDER C, HUMPHREYS GEORGE C, STONE JOHN H, JANEWAY Engineering Foundation Board H. M. BOYLSTON J. VIPOND DAVIES GALEN H, CLEVENGER Society for Promotion of Engineering Education WILLIAM KELLY ALLEN H. ROGERS]

Jan 1, 1928

Are Stockpile Requirements Exaggerated? THE federal stockpile of strategic and critical materials was created for an emergency. The emergency has occurred but no withdrawals are being made from the stockpile. On the contrary, the-rate of stockpiling is being increased. A serious dislocation between supply and demand for metals exists and purchases for the stockpile are a significant contributing factor in this situation.

Jan 3, 1951

Jan 1, 1920

For the convenience of members who may be traveling from place to place, the Secretary has compiled a list of libraries or other places in the United States and foreign countries where MINING AND METALLURWGY or the Transactions may be consulted. This list will be sent to members if they so request.

Jan 1, 1925

A Progress Report of The Engineering Foundation, which is a history of the Foundation and a report of its activities, has been printed. A limited number may be obtained by members of the Institute by writing to the office of the Institute or to the Secretary of the Foundation.

Jan 11, 1919

The Second Annual Safety First Dinner to the Liberty Bell Mine Crew was held on Apr. 7, 1916, in recognition of the second year without fatal accident and with few serious accidents. The address of the evening was given by the Rev. Edward Burns Martin, on "Safety and Citizenship," and was followed by informal talks on safety, health and citizenship.

Jan 6, 1916

Tufts College Studies, Tufts College Library, Tufts College 57, Mass. R L. Walkley, Librarian A number of publications of Tufts College, on geology, by Alfred C. Lane, have been issued, mostly as reprints from other sources: No. 24, Wet and dry differentiation of igneous rocks, 31, Mine water composition and index to the course of ore-bearing currents, 34, The Keeweenan fault, 42, Weight of sedimentary rocks per unit volume, 43, Geotherms of Lake Superior copper country, 45, Genetic significance of grain. For copies or further information, write to the above.

Jan 1, 1933

The Howe Memorial Lecture, in memory of Henry Marion Howe, Past President of the Institute, was authorized in April, 1923, as an annual address to be delivered by invitation under the auspices of the Institute by an individual of recognized and outstanding attainment in the science and practice of iron and steel metallurgy or metallography, chosen by the Board of Directors

Jan 1, 1943

In preparation for the 119th meeting, New York, Feb. 17 to 20, 1919, the following committees have been appointed: Committee on Arrangements ALLEN H. ROGERS Chairman. NY. 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 11, 1918

By John V. Beall

WHEN asked a few weeks ago if we wished to visit the Coors plant at Golden, Colo., we agreed with alacrity being well acquainted with the high quality of Coors beer and having heard that the company was most liberal about sampling privileges. Instead of a brewery, we found ourselves in a pottery, the Coors Porcelain Co., owned and operated by the firm of beer fame. Our apparent disappointment was dispelled as the wonders of the porcelain products were unfolded.

Jan 2, 1953

By J. M. Silliman

Isometrical drawing and clinographic projection are generally preferred to perspective drawings for representation of small objects or complicated mechanisms, as they present to the eye a sufficiently accurate picture of the object, while they possess great advantages over perspective in the simplicity and rapidity of execution, and the facility they give for taking measurements directly from the drawings.

Jan 1, 1882

By J. S. Blakemore, E. O. Hall

SERRATED yielding, commonly called the Portevin-Le Chatelier effect, is known to occur in a wide range of alloys where the moving dislocations are considered to be locked by the diffusion of solute atoms to them. From the work of Cottrell,1 an approximate relationship between strain rate, E, dislocation density, p , and solute diffusion coefficient, D, giving rise to serrated yielding is: e =Dp

Jan 1, 1969

The Mining and Metallurgical Club of the University of Toronto held a very successful meeting at the Engineers' Club on Jan. 29, 1917. Interesting papers on the Arizona Mining Districts and on the Creighton Mine at Sudbury were read. Several members of the freshman class who have changed from other branches of engineering to mining have been taken into the Club, so that we are now booming. We are also making an attempt to have more of our members apply for junior membership in the Institute, and hope to report favorably along these lines in the near future. C. A. RICHARDSON, Secretary.

Jan 3, 1917

At its meeting on February 21, 1933, the Board of Directors the following resolution defining and expressing the policy of the Institute with respect to official participation or action in controversial matters: WHEREAS, the Board of Directors at its last meting passed the following resolution: "The Board of Directors, having been appealed to by several Local Sections for advice concerning the attitude and policy of the Institute relating to the endorsement of candidates for public office, the following statement of policy is formulated:

Jan 1, 1934

Jan 1, 1920

YEAR OF ELECTION 1913. FRANK DAWSON ADAMS, Montreal, Canada. 1921. WILLIAM CUTHBERT BLACKETT Sacriston, Durham, England. 1920. HENRY STURGIS DRINKER Merion Station, Pa. 1933. KARL EIKERS NEW YORK, N. Y. 1922. FEDERICO GIOLITTI Torino, Italy. 1906. SIR ROBERT A. HADFIELD London, England. 1928. JOHN HAYS HAMMOND New York, N. Y. 1921. FRANK WILLIAM HARBORD London, England. 1917. HERBERT HOOVER Washington, D. C. 1905. HENRI LECHATELIER Paris, France. 1931. WALDEMAR LINDGREN Cambridge, Mass. 1921. C. McDERMID London, England. 1913. EZEQUIEL ORDONEZ Mexico City, Mexico. 1911. ROBERT H. RICHARDS Cambridge, Mass. 1934. T.A. RICKARD Victoria, B.C., Canada 1933. ALBERT SAUVER Cambridge, Mass.

Jan 1, 1934

The Society of Automobile 'Engineers is planning to hold its Annual Meeting on Jan. 11, 1917. The Society extends a cordial invitation to the members of the Institute to attend a technical session on the afternoon of that day, in the auditorium of the Engineering Societies Building, and to take part in the proceedings. Papers are being prepared on the subjects of high-speed engines, dynamics of the automobile and electrical equipnment. It is also expected that important papers will be presented on aerial navigation over water, and the use of motor boats in war. Captain V. E. Clark of the Signal Corps is to give a paper on the requlrements of aeroplane design particularly as regards the experience of the Army in using aeroplanes in Mexico

Jan 1, 1917

By Fred P. Dewey

In my paper on the porosity and specific gravity of coke, read at the Roanoke meeting, June, 1883, and published in this volnme, an analysis by Dr. henry Froehling is reported (p. 10 of the preliminary edition of the paper, or p. 120 of this volume), as showing the composition of Fire Creek coke. This analysis WaS of coke made in beehive ovens at Low Moor, Va., from New River coal. Dr. Froehlng's analysis of the Fire Creek coke was as follows: Moisture..........0.260 Volatile matter.........0.260 Fixed carbon .........92.377 Ash 1....6.750 Sulphur..........0.535 Phosphorus.........0.0146 Both analyses are reported side by side in The Erginias for 1883, p. 99. By an error in copying, the Low Moor analysis was trans-

Jan 1, 1884

By Thomas V. Falkie

These are exciting times for the coal mining community. Although the industry is in the middle of a healthy boom, there are strong forces tending to counteract or at least temper the rate of growth. There are many pushing and pulling factors of interest to mining people, and a few salient ones will be mentioned here. Primarily because of a tremendous demand for energy, a demand that can't be met by other fuels, the coal industry is in boomsville. Another contributing factor to this situation is the increased overseas demand for metallurgical coal. These demands are being counteracted by a lack of people, the lead-time required to develop new capacity and wildcat strikes, among other things.

Jan 1, 1971

1944. Walter Hull Aldridge New York, N. Y. 1946. Peter M Anderson Johannesburg, South Africa 1946. Charles Camsell Ottawa, Ont. Canada 1946. Charles Augustus Carlow Fife, Scotland 1949. Erie Victor Daveler New York, N. Y 1946. Cecil H. Desch London, England 1946. William Fraser London, England 1917. Herbert Hoover New York, N. Y. 1941. Daniel Cowan Jackling San Francisco, Calif. 1939. Henry Krumb New York, N. Y. 1942. Essington Lewis Melbourne, Vic., Australia 1921. C. McDermid London, England 1944. Walter C. Mendenhall Washington, D. C. 1942. Paul Dyer Merica New York, N. Y. 1938. A. M. Portevin Paris, France 1934. T. A. Rickard Victoria, B.C., Canada 1946. John R. Suman Houston, Texas 1946. Wen-Hao Wong Chungking, China

Jan 1, 1952