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  • NIOSH
    Bureau Of Mines Mineral Investigations In The Juneau Mining District, Alaska, 1984-1988 - Volume 2.- Detailed Mine, Prospect, And Mineral Occurrence Descriptions - Section C - West Lynn Canal Subarea - Introduction - Location, Access And Land Status

    By Albert H. Clough

    The West Lynn Canal subarea of the Juneau Mining District (JMD) is defined by Lynn Canal on the east, Davidson Glacier to the north, Icy Strait to the south and the Glacier Bay National Park Boundary

    Jan 1, 2012

  • NIOSH
    OFR-67(2)-75 Characterization Of The Structural Behavior Of Rock Masses - Appendix C - An Alternative Structural Model For The Characterization Of Rock Masses Volume II ? 1. Introduction ? 1.1 General

    By L. R. Herrmann

    The most fundamental feature of fracture is that it involves separation. Such separation can arise by either separation of molecules, more or less along the line joining their centers (tension), or by

    Jan 1, 2012

  • NIOSH
    Minerals In The U.S. Economy: Ten-Year Supply-Demand Profiles For Mineral And Fuel Commodities (1966-75) - U.S. Minerals Supply/Demand Flow Diagrams And Tables

    The accompanying supply/demand flow diagrams and 10-year tables for mineral and fuel commodities present essential data required by government, industry, and others to formulate policies and programs

    Jan 1, 2012

  • NIOSH
    OFR-55-76 Spatial Graphs Of Anisotropic Elastic Properties For The Various Symmetry Systems

    By Thomas R. Bur

    The patterns of variation of the 21 anisotropic elastic constants with direction arc presented for all of the symmetry systems that are normally expected to occur in rocks and in the constituent miner

    Jan 1, 2012

  • NIOSH
    Minerals In The U.S. Economy: Ten-Year Supply-Demand Profiles For Mineral And Fuel Commodities (1965-74)

    The accompanying supply/demand flow diagrams and 10-year tables for mineral and fuel commodities present essential data required by government, industry, and others to formulate policies and programs

    Jan 1, 2012

  • NIOSH
    Bureau Of Mines Mineral Investigations In The Juneau Mining District, Alaska, 1984-1988 - Volume 2.- Detailed Mine, Prospect, And Mineral Occurrence Descriptions - Section B - Glacier Bay Subarea ? Introduction

    By Jan C. Still

    The Glacier Bay subarea is that part of the Juneau Mining District (JMD) within Glacier Bay National Park and Preserve (GBNP). It is the western portion of the JMD and consists of the land between the

    Jan 1, 2012

  • NIOSH
    Bureau Of Mines Mineral Investigations In The Juneau Mining District, Alaska, 1984-1988 - Volume 2.- Detailed Mine, Prospect, And Mineral Occurrence Descriptions - Section A - Haines-Klukwan-Porcupine Subarea ? Introduction

    By Jan C. Still

    The Haines-Klukwan-Porcupine subarea of the Juneau Mining District (JMD) is located in the northern portion of the JMD and consists of the land between the Alaska-British Columbia boundary, the Chilko

    Jan 1, 2012

  • NIOSH
    OFR-103(1)-75 Circuit Breaker Development And Application - USBM Contract Phase I Report - Section 1. Program Objectives And Results - 1. 1 Background

    By D. A. Paice

    Direct current electrical systems are used in most coal mines primarily to power the main haulage trains and secondarily to feed other equipment and passageway lighting. Electrical power is supplied f

    Jan 1, 2012

  • NIOSH
    Bureau Of Mines Mineral Investigations In The Juneau Mining District, Alaska, 1984-1988 - Volume 2.- Detailed Mine, Prospect, And Mineral Occurrence Descriptions - Section D - Juneau Gold Belt Subarea ? Introduction ? Location

    By Earl C. Redman

    The Juneau Gold Belt, centered on Juneau and approximately 120 miles long by 10 miles wide, stretches from Berners Bay on the north to Windham Bay on the south (fig. D-l). Access within the Juneau Gol

    Jan 1, 2012

  • NIOSH
    OFR-28-72 Systems Analysis Of An Inherently Explosion-Proof Coal Mining Operation

    The inherently explosion-proof mine (EPM) concept is based upon the non-flammability of certain combustible-oxidant-inert gas mixtures, and the effect of partial pressure of gases on physiological rea

    Jan 1, 2012

  • NIOSH
    OFR-86-95 The Magnitude 5.3 Seismic Event And Collapse At The Solvay Trona Mine: Analysis Of Pillar/Floor Failure Stability - Acknowledgments

    By Peter L. Swanson

    This investigation, which began 90 minutes after the February 3, 1995, seismic event, has benefitted from the assistance of a large number of individuals. These individuals provided information, data,

    Jan 1, 2011

  • NIOSH
    OFR-43-88 Results Of 1987 Bureau Of Mines Investigations In The Valdez Creek Mining District, Alaska

    By Joseph M. Kurtak

    The Bureau of Mines is currently conducting a four year mineral assessment of the 5.7 million acre Valdez Creek Mining District in Southcentral Alaska, as part of its ongoing statewide mining district

    Jan 1, 2011

  • NIOSH
    OFR-36-90 Analysis Of Balboa Bay, Beluga, Point Mackenzie, And Lost River As Port Sites For Use By The Mineral Industry

    By Gary E. Sherman

    To aid the U.S. Army Corps of Engineers in their Resource Development Navigation Study, the U.S. Bureau of Mines (Bureau) examined the potential for mineral development near ten Alaska port sites. Thi

    Jan 1, 2011

  • NIOSH
    OFR-19-90 Rare-Earth Element- And Yttrium-Bearing Pegmatite Dikes Near Dora Bay, Southern Prince Of Wales Island

    By James C. Barker

    Yttrium and rare-earth element. pegmatite dikes are associated with a peralkaline granitic and nephelene syenite complex near Dora Bay on southern Prince of Wales Island. Mineralized dikes were mapped

    Jan 1, 2011

  • NIOSH
    OFR-89-92 Submarine Disposal Of Mill Tailings From On-Land Sources - An Overview And Bibliography - An Overview And Bibliographic Compilation Of References On The Biological, Chemical, Environmental, And Technical Aspects

    By Roger L. Baer

    Marine disposal of mill tailings has been practiced worldwide for over a century. However, only recently have the environmental effects of marine disposal been systematically studied. Some early attem

    Jan 1, 2011

  • NIOSH
    OFR-33-89 Columbium- And Rare-Earth Element-Bearing Deposits At Bokan Mountain, Southeast Alaska

    By J. Dean Warner

    From 1984 through 1987, the Bureau of Mines investigated numerous prospects and new discoveries of columbium, rare-earth elements (REE), uranium, zirconium, and other metals associated with the multi-

    Jan 1, 2011

  • NIOSH
    OFR-115(1)-78 Study Of Mine Fires And Mine Ventilation - Part I - Computer Simulation Of Ventilation Systems Under The Influence Of Mine Fires - Summary

    By Rudolf E. Greuer

    The existing computer programs for the simulation of ventilation systems under normal ventilation conditions are reviewed and a suitable program for including the influence of mine fires is selected.

    Jan 1, 2011

  • NIOSH
    OFR-15-90 Mineral Deposit Inventory For Ten Alaska Port Sites - Introduction

    The following Inventory was prepared to provide mineral deposit data to the U.S. Army Corps of Engineers for use in the Resource Development Navigation Study in Alaska. The inventory was prepared usin

    Jan 1, 2011

  • NIOSH
    OFR-34-90 Geochemical Sampling Results From Bureau Of Mines Investigations In The Valdez Creek Mining District, Alaska

    By Michael D. Balen

    The Bureau of Mines (Bureau), in cooperation with the Alaska Division of Geological and Geophysical Surveys (ADGGS), conducted field investigations from 1987 through 1989 in the 5.7 million-acre Valde

    Jan 1, 2011

  • NIOSH
    OFR-194-84 Minerals Availability Commodity Directory on Cobalt

    By William L. Rice

    This Bureau of Mines Open Pile Report on cobalt is one of a series of minerals availability commodity deposit abstracts. Nonconfidential information from the Minerals Availability Program data base co

    Jan 1, 2011