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Jan 1, 1932

POSITIONS VACANT No. 175. At a mine in Missouri: general designer on timber work for concentrator power house and general mill work; two draftsmen on all kinds of mine and null work; two tracers, good letterer and map tracer; one transit man for surveys who can plot his work accurately.

Jan 1, 1917

Jan 1, 1930

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Jan 1, 1938

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

Jan 1, 1953

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

Jan 1, 1952

By A. J. Griest, J. C. Danko

IN the course of vacuum evaporation experiments, sublimation figures were observed on the surface of a pure nickel specimen. A cubic figure, typical of those observed on this specimen, is illustrated

Jan 1, 1957

Jan 1, 1917

E. D. WILLIAMSON,* Washington, D. C. (written discussion?).-The paper is interesting and suggestive and the work described should he carried to completion, as it presents points of interest quite apart from the immediate application in glass manufacture. It ought to help, for instance, in throwing light on the chemical nature of glasses and on all questions of viscous flow.

Jan 11, 1919

The following extract from a letter written by a distinguished member of the Institute, Albert Sauveur, of Harvard University, to a former. president of the Institute, Charles F. Rand, is of general interest. It is dated Dec. 3, 1917, at the Hotel des Saints-Pères, 65 Rue des Saints-Pères, Paris:

Jan 2, 1918

[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, 1940

By Edmund C. Perhin

At the suggestion of some members of the Institute, attention is called to the record of the working of Dunbar Furnace during the twelve months ending in Jaunary, 1874. During this period, with a product of over eleven thousand gross tons, not a single ton of

By William B. Stephenson

The paper describes efficient and effective methods of automatically controlling sand pump installations. Particular reference is made to liquid-level controls actuating variable speed pump-driving units. Included is a discussion of various combinations of equipment, with schematic drawings.

Jan 7, 1950

By R. A. Kinzie

In a conventional cement plant, the drying and heating of the raw material takes place in the upper section of a cylindrical kiln where the heat exchange is poor. In a Lepol kiln this part of the process is carried out on a traveling grate where the heat exchange is efficient. The increase in fuel economy justifies the greater complexity of the installation.

Jan 2, 1950

Jan 1, 1942

By John Griffen

This paper records over twenty years' experience with the use of the Rheolaveur system in the United States, showing its ability to meet changing conditions caused by the dirtier mine output of present-day mechanical mining methods. Data are given on size ranges handled, number and capacity of units installed, maintenance experience, and operating results on two-product and three-product separations.

Jan 11, 1950

By Edward K. Landis

Our Transactions contain so many suggestions of apparently trivial, yet really important, contrivances for the saving of time and

Jan 1, 1893