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Jan 1, 1938

Jan 1, 1908

By M. Oka, C. M. Wayman

It has been known for some time1 that (110)b twinning is possible in bct martensite.* Any plane of the form (110) not parallel to the fourfold axis of tetra-

Jan 1, 1969

The Geological Society of America, 419 West 117th St., New York, N. Y. Charles-P. Berkey, Secretary. The only official publication of the Society is the Bulletin. It contains the Proceedings of the annual meeting of the Society, as well as the Proceedings of the affiliated societies?the Mineralogical Society of America, and the Paleontological Society?and of Section E of the American Association for the Advancement of

Jan 1, 1933

PRESIDENT L. D. RICKETTS,1 NEW YORK, N. Y. PAST PRESIDENTS BENJAMIN B. THAYER,1 NEW YORK, N. Y. WILLIAM L. SAUNDERS,2 NEW YORK, N. Y. FIRST VICE-PRESIDENT SIDNEY J. JENNINGS1 NEW YORK, '_N. Y. 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 4, 1916

By S. H. Ash

lowest fatal injury rate in history conferences stress selling worker on safety international safety conference beneficial

Jan 2, 1951

J. MURRAY RIDDELL, Chairman Guy N. BJORGE, Vice-chairman Alluvial Mining CLINTON BERNARD , H. R. NORSWORTHY BENERE H. GRANT O. B. PERRY

Jan 1, 1938

By Charles P. Williams

THE successful production of zinc white or oxide on a commercial scale in this country dates from the issue of the patent of Samuel Wetherill, for the preparation of the material (November, 1855), and

Jan 1, 1877

SALT LAKE CITY MEETING The One Hundred and Eighth Meeting of the Institute, for the presentation and discussion of technical papers, will be held at Salt Lake City, Utah, August 10 to 14, 1914. ALL PAPERS TO BE PRESENTED AT THIS MEETING MUST BE IN THE HANDS OF THE SECRETARY ON OR BEFORE MAY 31, 1914.

Jan 3, 1914

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Jan 1, 1938

By Edward Hart

THE specimen of glazy iron used for analysis was highly characteristic in appearance. It was made at one of the furnaces of the Glendon Iron Works, working a light burden of ore with a highly silicious cinder. There are very few records of analyses of this variety of iron. I have been able to find but the two given by Bell, and I add these to my analysis for comparison.

Jan 1, 1877

By W. C. Coons, E. H. Rennhack, R. A. Perkins

THE constitution of Ti-N alloys containing up to 17.5 wt pct N has been investigated by Palty, Margolin, and Nielsen.1 Their results, which confirmed earlier work

Jan 1, 1969

PRESIDENT. CHARLES F. RAND,1 NEW YORK, N. Y. PAST PRESIDENTS. CHARLES KIRCHHOFF,1 NEW YORK, N. Y. JAMES F. KEMP,2 NEW YORK, N. Y. FIRST VICE-PRESIDENT. BENJAMIN B. THAYER,1 NEW YORK, N. Y. 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 11, 1913

For the year ending February, 1917 PRESIDENT ................... L. D. RICKETTS,' NEW YORK, N. Y. . PAST PRESIDENTS BENJAMIN B. THAYER 1 NEW YORK, N. Y. ................. WILLIAM L. SAUNDER2, NEW YORK, N. Y. FIRST VICE-PRESIDENT ................ SIDNEY-J. JENNINGS,1 NEW YORK, N. Y. TREASURER ................ GEORGE C. STONE,l. NEW YORK, N. Y. . SECRETARY EMERITUS ................ ROSSITER W. RAYMOND, NEW YORK, N. Y . SECRETARY ............... BRADLEY STOUGHTON, NEW YORK, N. Y.

Jan 8, 1916

WHERE "MINING AND METALLURGY" OR THE TRANSACTIONS MAY BE CONSULTED 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 METALLURGY or the Transactions may be consulted This list will be sent to members if they so request

Jan 1, 1923

STANDING COMMITTEES Executive-SIDNEY J. JENNINGS, chairman. Membership-KARL EILERS; chairman. Finance-GEORGE D. BARRON, chairman. Library-E. GYBBON SPILSBURY, chairman. Papers and Publications-BRADLEY STOUGHTON, chairman. Nominations-R. V. NORRIS, chairman. Institute of Metals Division-WILLIAM M. CORSE, chairman; FRED L. WOLF, secretary, Ohio Brass Co. Mansfield, Ohio.

Jan 12, 1918

(Under this heading will he published notes sent to the Secretary of the Institute by members or other persons introduced by members.) Member, mining engineer, technical education with 9 years' varied experience as superintendent and operating engineer, desires position with mining or manufacturing company requiring the services

Jan 3, 1918

By J. T. Richards

ELASTIC constants, including E-modulus, G-modulus, Poisson's ratio, and compressibility, are affected by temperature, but not necessarily to the same degree nor in the same direction. Theoretical expressions relating the temperature coefficients for the various elastic constants have been introduced by Gruneisen. In considering the thermoelastic characteristics

Jan 1, 1955

By H. M. Morse

During the year 1942 there were 66 wildcats drilling in Mississippi. One cored in oil sand, the Macro Drilling Company's Longbell No. I in Clarke County, but as yet it has not succeeded in recovering the oil. These drillings broughi to light five salt domes, two of which had heavy oil showing; one drilled by the Magnolia Petroleum Co. in Warren County, and

Jan 1, 1943

By R. W. Raymond

HAVING had recently the opportunity of examining a transit and a plummet-lamp, manufactured by Messrs. Heller & Brightly, of Philadelphia, and intended for the use of mining engineers in under