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  • CIM
    The Sydney Coalfield

    By F. W. Gray

    A GEOLOGICAL study seeking to determine, for economic purposes, the value of the Sydney coalfield as a source of coal supply. Limitations of the coalfield come under two main heads: (a) Areal exte

    Jan 1, 1941

  • CIM
    The Magdalen Islands

    By F. J. Alcock

    THE Magdalen islands have recently been attracting attention as a possible source of manganese. As early as 1880 small masses of manganese oxides were known to occur in the soil and at least one attem

    Jan 1, 1941

  • SME
    The Hydraulic Excavator

    By John Mahoney

    We live in a world of change and the mining industry is enjoying some of the most rapid changes today that have been seen in a long time, We'd like you to open your mind to a new concept in mater

    Jan 1, 1973

  • AIME
    The Technical Audit

    By Allen Rogers

    IT IS universal practice for corporations, at the end of the fiscal period, to call in a firm of chartered accountants to audit the books. The effect of this is to put an independent organization&apos

    Jan 6, 1922

  • AIME
    The Drifton Breaker

    By Effingham Humphrey

    THE Lehigh Valley. Coal Co. finished the rebuilding of its Drifton No. 2 breaker at Drifton, Pa., in the summer of 1917. The new construction comprises an addition and the complete remodeling of the o

    Jan 2, 1918

  • AIME
    The Engineering Foundation

    On Wednesday evening, Jan. 27, 1915, were held in the auditorium of the Engineering Societies Building the inaugural exercises of The Engineering Foundation, established by the United Engineering Soci

    Jan 3, 1915

  • AIME
    The Comstock Lode

    The finding of gold, in enriching quantity, along the streams that issued from the western foothills of the Sierra Nevada was the prelude not only to the birth of an organized mining industry in Calif

    Jan 1, 1932

  • AIME
    The Hardenability Concept

    By L. D. Jaffe, John H. Hollomon

    THE hardenability concept has become widely used during the last few years for the choice and substitution of steels. Before the work of Grossmann,1 the systems for predicting hardenability from chemi

    Jan 1, 1946

  • CIM
    The Polaris Mine

    By P. G. Keohane, J. S. Drake

    "Cominco's Polaris Mine is a lead-zinc underground operation that began commercial production in early 1982. The mine site is located on Little Cornwallis Island in the Canadian Arctic at a latit

    Jan 1, 1985

  • SME
    The Soo Canal

    By Alexander N. Winchell

    "The waters of Lake Superior flow into those of Lake Huron through the St. Mary's river. The rapids in this river are about half a mile wide and three-quarters of a mile long, in which distance t

    Jan 1, 1920

  • CIM
    The Grenville Province

    By A. J. Baer

    "DEFINITION OF THE REGION AND ITS BOUNDARIESTHE EXPOSED PART OF THE GRENVILLE PROVINCE is the southeastern part of the Canadian Shield, characterized by crystalline rocks with K-Ar ages of about 1,000

    Jan 1, 1970

  • AIME
    The Boston Meeting

    By AIME AIME

    THE annual fall meeting of the Institute of Metals and the Iron and Steel divisions, in conjunction with the American .Society for Steel Treating and the Metal Congress and Show, at Boston was from ma

    Jan 1, 1931

  • AIME
    The Frue Concentrator

    By Walter McDermott

    THIS machine is an improvement on the well-known endless traveling belt used for dressing slimes in many mills ; the chief point of difference, and constituting the essential advantage of the present

    Jan 1, 1875

  • RMCMI
    The Mudite Machine

    Briefly, the machine consists of a steel frame mounted on roller bearing wheels and axles, an electric motor, a fully enclosed speed reduction gear unit, a specially designed centrifugal pump driven t

    Jan 1, 1925

  • AIME
    The Panama Canal.

    By S. S. PRENZ

    Discussion held at the sessions of the Canal Zone meeting, November, 1910. [SECRETARY'S NOTE.-As a result of this discussion, an expression of opinion covering all points of unanimous agreemen

    Jan 1, 1911

  • AIME
    Utah - The Prospect

    FEW whose good fortune it has been to gaze on the Utah Copper mine but will agree that it is one of the two or three most magnificent man-made spectacles in the world. Skyscrapered Manhattan Island pe

    Jan 1, 1933

  • AIME
    The Mineral Industry

    By Scott Tzcrner

    WITHIN recent years people have begun to realize the importance and significance of the mining and allied industries. The leading part the engineer plays in civilization is becoming recognized. Howeve

    Jan 1, 1932

  • AIME
    The Engineers' Memorial

    HOW the Engineers' Memorial clock and carillon at Louvain has impressed the people of that city is indicated by the following letter sent by the Secretary of the University of Louvain to the Secr

    Jan 1, 1928

  • AIME
    The Annual Dinner

    By AIME AIME

    WEDNESDAY night, by long tradition, is al- ways set aside for the annual dinner, even when, as it was this year, it is Ash Wednesday. Whether the somewhat smaller attendance than last year is attribut

    Jan 1, 1931

  • CIM
    The pendulum swings

    By Robert B. Parsons

    "The pendulum in Ottawa has swung dramatically from fiscal policy to monetary policy over the last several years. International trends indicate that the pendulum has to start its swing the other way,

    Jan 1, 1991