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Jan 1, 1902

Jan 1, 1937

Jan 1, 1902

New Products Equipment

Jan 10, 1951

Jan 1, 1932

OFFICERS AND DIRECTORS (The Officers are the President, 6 Vice-Presidents, the Treasurer, and the Secretary) President and Director HENRY DEWITT SMITH' Past President and Director LEO F. REINARTZ President-elect and Director C. E REISTLE, JR

Jan 1, 1955

By William P. Prof. Blake

THE occurrence of siderite in beds of considerable thickness in the clay formations of Martha's Vineyard, Mass., may have some economical importance, and is at least interesting in a scientific point of view.

Jan 1, 1876

Established as a Division November 17, 1948 T D Jones, Chairman O C Ralston, Past Chairman R R. McNaughton, Chairman-elect B. W Gonser '53, Vice-Chairman P. T. Stroup '54, Vice-Chairman Ernest Kirkendall, Secretary 29 West 39th Street, New York City

Jan 1, 1952

American Refractories Institute Oliver bldg., Pittsburgh, Pa. D. A. Dexter, Secretary. The Institute publishes a monthly Technical Bulletin carrying papers concerning. refractories. Nonmembers of the Institute may obtain them for 10 cents per copy. Five Technologic Papers have also been published; they are the results of research on refractories and may be obtained at a cost of 50 cents each.

Jan 1, 1933

By W. S. Reid

R. H. McNAUGHTON*—The Smelt- ing Co. and Mr. Reid and his men at Selby are to be congratulated on the job they have done on sinter gas recircula-

Jan 1, 1950

Jan 1, 1947

Jan 1, 1947

STANDING COMMITTEES Executive-A. R. LEDOUX, chairman. Membership-J. E. JOHNSON, JR., chairman. Finance-J. V. N. DORR, chairman. Library-E. GYBBON SPILSBURY, chairman. Papers and Publications-BRADLEY STOUGHTON, chairman.

Jan 4, 1919

Jan 1, 1960

STANDING COMMITTEES Executive-A. R. LEDOUX, chairman. Membership-GEORGE C. STONE, chairman. Finance-J. V. N. DORR, chairman. Library-E. GYBBON SPILSBURY, chairman. Papers and Publications-BRADLEY STOUGHTON, chairman. Nominations-Pops YEATMAN, chairman.

Jan 8, 1919

Jan 1, 1914

PRESIDENT E DEGOLYER, District 0 NEW YORK, N Y PAST PRESIDENTS J V. W. REYNDERS, District 0 NEW YORK, N Y SAMUEL A TAYLOR, District 3 PITTSBURGH, PA FIRST VICE-PRESIDENT GEORGE OTIS SMITH, District 4 WASHINGTON, D C TREASURER CHARLES F. RAND NEW YORK, N Y SECRETARY H. FOSTER BAIN NEW YORK, N Y

Jan 1, 1923

By B. Welber, R. Webeler

A CCORDING to accepted theory, fatigue in A] metals is connected with the occurrence of local strain hardening even at applied stresses below the yield point as a consequence of stress concentrations created by the presence of structural inhomogeneities.1 It seemed possible, therefore, that

Jan 1, 1954

PROF RICHARD ÅKERMAN Stockholm, Sweden ANDREW CARNEGIR New York, N.Y. DR. JAMES DOUGLAS New York, N.Y. PROF HATON DE LA GOUPILLIERE Paris, France PROF HANS HOEFER Leoben, Austria PROF HENRI LOUIS LE CHATELIER Paris France M FLORIS OSMOND Paris, France JOHN E. STEAD Middlesborugh, England PROF DIMITRY CONSTANTIN TSCHERNOFF St Petersburg, Russia CHARLES D WALCOT Washingtion D.C.

Jan 1, 1910