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  • NIOSH
    IC 7213 Dredging Pennsylvania Anthracite ? Foreword

    By Joseph A. Corgan

    The river- or dredge-coal industry of Pennsylvania is conducted on many of the rivers and creeks that drain the Pennsylvania anthracite fields. Coal thus recovered found its way into the streams as co

    Jan 1, 1942

  • CIM
    Ventilation as a Means to Prevent Silicosis in Ontario Mines

    By Clifford S. Gibson

    THESE troubled times suggest three reasons for maximum effort to control silicosis: (1) To keep to a minimum the ever-increasing burden occasioned by past deficiencies in this respect. (2) To effe

    Jan 1, 1942

  • AIME
    Papers - Diffusion Experiments on a Gold-silver Alloy by Chemical and Radioactive Tracer Methods (T.P. 1429, with discussion)

    By A. William Johnson

    It was pointed out in an earlier paper1 that our understanding of the atomic mechanism by which diffusion occurs in metallic alloys is scarcely in an advanced state. This unsatisfactory condition is t

    Jan 1, 1942

  • NIOSH
    RI 3606 Manganese Investigations - Metallurgical Division - 1. Ore-Dressing Studies Of Manganese Ores - Concentration Of Manganese Ores From The Drum Mountain District, Utah ? Introduction (1cdaaa7f-cd8f-4cf3-8b56-214878c33fd5)

    By S. R. Zimmerley

    As a result of the drilling program of the :Mining Division, Bureau of Mines, large amounts of manganese ores have been blocked out in the Drum Mountain District of Utah. The ores, as mined, would not

    Jan 1, 1942

  • CIM
    Water Power in British Columbia

    By Ernest Davis

    WATER power, until developed, produces nothing, but when harnessed it continues to produce, it might be said, indefinitely. Hence the importance of developing all feasible water powers. British Colu

    Jan 1, 1942

  • AIME
    Metallurgy of Copper

    By Archer E., Wheeler

    Producing copper companies were active during 1941 owing to the national defense program the United States and the requirements of the friendly belligerent nation. This activity extended to the Americ

    Jan 1, 1942

  • CIM
    Geology of the Matachewan Consolidated Mine, Northern Ontario

    By C. H. Hopper

    THE gold orebodies of the Matachewan Consolidated mine are of particular interest geologically because of their odd shapes, their apparent lack of connection one with another, and the fact that they o

    Jan 1, 1942

  • NIOSH
    RI 3614 Manganese Investigations - Metallurgical Division - 5. Ore-Dressing Studies Of Manganese Ores - Beneficiation Of Manganese Wad Ores From The Chinn Property, Batesville, Ark.

    By S. M. Shelton

    Ferrograde manganese ore or its equivalent is essential to the manufacture of every ton of steel produced; although it is well-known that there are largo deposits of low-grade ore in the United States

    Jan 1, 1942

  • AIME
    Texas

    While coal was undoubtedly seen by the Spanish explorers in Texas, no mention can be found of it in any of their available published records; it was likely noticed by the first Americans, and coal alo

    Jan 1, 1942

  • AIME
    Hardness Changes Accompanying The Ordering Of Beta Brass

    By Cyril Stanley Smith

    BETA brass (consisting of approximately equal atomic proportions of copper and zinc) exists as a random solid solution at high temperatures, but at low temperatures [ ] an ordered structure is stabl

    Jan 1, 1942

  • AIME
    Hardness Changes Accompanying The Ordering Of Beta Brass (79f40f83-24bd-4902-8000-e167d007b4b3)

    By Cyril Stanley Smith

    BETA brass (consisting of approximately equal atomic proportions of copper and zinc) exists as a random solid solution at high temperatures, but at low temperatures [ ] an ordered structure is stabl

    Jan 1, 1942

  • CIM
    Methods of Breaking and Handling Ore at East Geduld

    By A. S. Knight

    THE breaking and handling of ore is obviously the most important consideration when the layout of a new mine is contemplated. The problem must be attacked with due regard to the claim area of the prop

    Jan 1, 1942

  • AUSIMM
    The Mineral Association of Tennant Creek Gold Ores

    By Edwards A. B

    The following note on the mineral association in the ores of the Tennant Creek Goldfield, Northern Territory, is largely based on Mineragraphic Reports Nos. 49, 89, 117 and 193 of the Council for Scie

    Jan 1, 1942

  • AIME
    Diffusion Experiments On A Gold-Silver Alloy By Chemical And Radioactive Tracer Methods

    By William A. Johnson

    IT was pointed out in an earlier paper1 that our understanding of the atomic mechanism by which diffusion occurs in metallic alloys is scarcely in an advanced state. This unsatisfactory condition is t

    Jan 1, 1942

  • NIOSH
    RI 3606 Manganese Investigations - Metallurgical Division - 1. Ore-Dressing Studies Of Manganese Ores - Concentration Of Manganese Ores From The Drum Mountain District, Utah ? Introduction

    By S. R. Zimmerley

    As a result of the drilling program of the Mining Division, Bureau of Mines, large amounts of manganese ores have been blocked out in the Drum Mountain District of Utah. The ores, as mined, would not

    Jan 1, 1942

  • AIME
    Tennessee, North Carolina, Georgia And Michigan - Tennessee

    The earliest reference to coal in Tennessee is that by Dr. Walker in 1750 (see p. 18) where he saw it near the present site of Middlesboro. The next reference found is in 1798 when Morse stated, "some

    Jan 1, 1942

  • AUSIMM
    The Tennant Creek Goldfield

    The Tennant Creek goldfield is situated in the Northern Territory, 360 miles north of Alice Springs, or a tot~l distance of 1,300 miles north of Adelaide, and 600 miles south of Darwin. The auriferous

    Jan 1, 1942

  • AIME
    Papers - Earth Resistivity as Applied to Problems of Exploration in the Potash-bearing Region near Carlsbad, New Mexico (T. P. 1354)

    By H. Cecil Spicer

    The results described in this article are based on field work conducted during the periods APril-May, 1939, and MaY-JulY, 1940. The United States Potash CO. is mining potash on Government land under a

    Jan 1, 1942

  • NIOSH
    IC 7226 High-Grade Dolomite Deposits In The United States ? Introduction

    By John H. Weitz

    Dolomite, heretofore regarded merely as a variety of commonplace limestone, has suddenly attained headline prominence, partly because of the increase in demand for dolomite refractories to line metall

    Jan 1, 1942

  • AIME
    Planning for the Anthracite Area

    By AIME AIME

    FEW indeed are the sections of the country where trained or partly trained workers have not already been hired by a war industry plant or will be within the near future. Yet right in the midst of the

    Jan 1, 1942