Search Documents

Search Again

Search Again

Sort by

  • AIME
    Technical Papers and Discussions -Miscellaneous Metals and Alloys - Transient Nucleation (Metals Tech., June 1948, TP 2365)

    By David Turnbull

    In most reactions involving solids the transformation kinetics may be represented by the combination of two processes —those of nucleation and of growth. For example, Mehl and his coiq-orker in their

    Jan 1, 1949

  • CIM
    United Keno Hill Mines

    By Jr. Carmichael

    "THE MAYO AREA was prospected as early as 1887. The first major activity started in 1898, when the Stewart River and its tributaries were examined for placer deposits, and in succeeding years the dist

    Jan 1, 1949

  • NIOSH
    RI 4566 Sulfur In Petroleum III. Selected Physical Properties Of Some Sulfur Compounds

    By R. Vernon Helm

    Four tables listing values for the various physical properties of those sulfur compounds most likely to occur in petroleum and petroleum products are given herein. The data necessary to bring the firs

    Jan 1, 1949

  • NIOSH
    RI 4498 Pilot-Plant Production Of Steel From Sponge Iron

    By W. W. Stephens

    As part of the Bureau of Mines program directed toward more effective utilization of the mineral resources of the United States, a number of processes for production of sponge iron have been investiga

    Jan 1, 1949

  • NIOSH
    RI 4509 Investigation Of The Alfred Davis Soapstone Deposits, Gillespie County, Tex.

    By W. D. Mcmillan

    Soapstone is the term applied to an impure, massive, soft rock with a greasy feel. It is of variable composition, consisting chiefly, however, of talc, tremolite, and chlorite. Although limited quanti

    Jan 1, 1949

  • NIOSH
    RI 4512 Investigation Of Casper Mountain Chromite Deposits, Natrona County, Wyo.

    By F. W. Horton

    Investigation of an extensive deposit of chromite-bearing actinolite-talc schist situated on the summit of Casper Mountain, 10 miles south of Casper, Wyo., was one of the first projects Undertaken by

    Jan 1, 1949

  • NIOSH
    RI 4592 Investigation Of Christy Titanium Deposit Hot Spring County, Ark.

    By Donald F. Reed

    During the first 6 months of 1948 the Bureau of Mines investigated the titania, deposit on the Wynn 0. Christy property in northern Hot Spring County, Ark. The property is situated in Magnet Cove, ab

    Jan 1, 1949

  • NIOSH
    RI 4477 Method Of Assaying Oil Shale By A Modified Fischer Retort (Revision Of R.I. 3977)

    By K. E. Stanfield

    One of the initial projects under the oil-shale research and development phase of the Synthetic Liquid Fuels Act, Public- Law 290, 78th Congress, approved April 5, 1944, was a survey of oil shales of

    Jan 1, 1949

  • NIOSH
    RI 4535 Recovery Of Aluminum From Crude Aluminum-Silicon Alloy By Extraction With Molten Zinc

    By Hillary W. St. Clair

    The purpose of this investigation was to determine the practicability of refining crude aluminum-silicon alloy or aluminum scrap containing silicon and iron by selective dissolution in zinc of the alu

    Jan 1, 1949

  • NIOSH
    RI 4396 Sampling Of Helen Beryl Pegmatite Custer County, S. Dak.

    By John Paul Gries

    During World War II, when the curtailment of imports led to an unprecedented demand for domestically produced mica, beryl, and other pegmatitic minerals, the Bureau of Mines and the Geological Survey

    Jan 1, 1949

  • CIM
    Wabana Iron Ore Deposits

    By John C. Lyons

    "The Wabana iron ore deposits occur as flat-dipping beds of oolitic hematite and chamosite, of Lower Ordovician age, which outcrop for 3 miles along the northwest coast of Bell Island, Conception Bay,

    Jan 1, 1949

  • CIM
    The Effects of Zirconium in Cast Iron

    By C. M. Offenhauer

    Abstract Zirconium markedly affects the formation of graphite in cast iron and may promote the formation of normal flake gaphite, fine flakes of eutectiform graphite, or spheroid nodular graphite,

    Jan 1, 1949

  • CIM
    The Patent System and the Public Interest

    By C. Harold Riches

    This article is directed co a commentary on the patent system in its relation to the public interest. As man gained supremacy over his environment, he could devote progressively increasing portions

    Jan 1, 1949

  • NIOSH
    RI 4615 Preliminary Tests Of Gold And Zinc Ores From Buzzard Mine, Placerville, Calif.

    By A. L. Engel

    As a part of the program of the Rare and. Precious Metals Experiment Station, Reno, Nev., in connection with investigations of treatment methods for precious and precious-base metal ores, to further c

    Jan 1, 1949

  • CIM
    The Application of Geology in the Search for Industrial Mineral Deposits

    By A. S. Dawson

    Introduction The purpose of this paper is to discuss, in a general way, the application of geological principles in the exploration for, and development of, deposits of industrial minerals. Mention

    Jan 1, 1949

  • AIME
    Miscellaneous Metals and Alloys - An Electron Diffraction Study of Oxide Films Formed on Copper-nickel Alloys at Elevated Temperatures (Metals Tech., June, 1948, TP 2391)

    By E. A. Gulbransen, J. W. Hickman

    Recent work by the authors1 on the oxide films formed on alloys of titanium and zirconium with nickel and copper indicated that an investigation of the oxides which form on alloys of copper and nickel

    Jan 1, 1949

  • AUSIMM
    Some Notes on the Equipment of the Electrolytic Zinc Company of Australasia Limited, at Rosebery, Tasmania

    The purpose of this paper is to list by tabulation and flow sheet, the operating equipment and installations in use at Rosebery, and to refer to particular items which may be of interest for purposes

    Jan 1, 1949

  • CIM
    Nor-Acme Mine

    By Nelson Hogg

    "THE NOR-ACME gold mine is located close to the north shore of Snow Lake, at 54°53' north latitude and 100°03' west longitude. It is about 75 air miles east of Flin Flon, and 36 miles by road from Wek

    Jan 1, 1949

  • NIOSH
    RI 4612 Chloride Volatilization And Other Tests On A Gold-Copper Ore

    By A. L. Engel

    The sample of ore on which the work described in this paper was done came from Mina Oriente, Carrizal Bajo, Provincia de Atacama, Chile, South America, and was sent at the request of the Chil.ean Gove

    Jan 1, 1949

  • CIM
    Inconvertibility of Currency vs The Gold Standard

    By Balmer Neilly

    To one with so little experience in matters pertaining to currency, international finance, and foreign trade, this is surely an ambitions venture on my part. However, this is a subject of prime import

    Jan 1, 1949