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  • NIOSH
    RI 3105 Flotation of Low-Grade Phosphate Ores II.

    By H. M. Lawrence, E. Roca

    "INTRODUCTION Of the phosphate rock deposits of the United States that are being exploited actively at present, the land-pebble area in Florida is the largest producer. In recent years the land-pebble

    Aug 1, 1931

  • NIOSH
    RI 3608 Manganese Investigations - Metallurgical Division - 4. Ore-Dressing Studies Of Manganese Ores - Concentration Of Manganese-Bearing Ore From The Dobbins Mine Of Cartersville, Ga.

    By T. L. Johnston

    The Dobbins property, about 4-1/2 miles northeast of Cartersville, Ga., was fist operated in 1866, it is the oldest manganese mine in Georgia and one of the oldest minus in the United States still pro

    Jan 1, 1942

  • NIOSH
    RI 3608 Manganese Investigations - Metallurgical Division - 4. Ore-Dressing Studies Of Manganese Ores - Concentration Of Manganese-Bearing Ore From The Dobbins Mine Of Cartersville, Ga. (f4b31e00-12b5-478f-b866-3ce2c9a0a350)

    By T. L. Johnston

    The Dobbins property about 4-1/2 miles northeast of Cartersville, Ga., was first operated in 1866. It is the oldest manganese mine in Georgia and one of the oldest mines in the United States still pro

    Jan 1, 1942

  • NIOSH
    Implementation Of Diesel Particulate Filter Technology In Underground Metal And Nonmetal Mines

    By L. D. Patts, G. H. Schnakenberg

    Achieving substantial reductions in the exposure of underground miners to diesel particulate matter in a number of metal and nonmetal mines in the U.S. depends on the ability of the industry to widely

  • NIOSH
    IC 8206 Marketing Ores And Concentrates Of Gold, Silver, Copper, Lead, And Zinc In The United States

    By Melford H. Salsbury

    The maximum net return from the sale of ores and concentrates of gold, silver, copper, lead, and zinc accrues to the producer when these mine products are marketed to the best advantage. Data are pres

    Jan 1, 1964

  • NIOSH
    RI 3580 Progress Reports -Metallurgical Division ? 48. Electrolytic Manganese And Its Alloys ? Manganese Metal - Methods Of Preparation

    By R. S. Dean

    [Methods s of preparing the manganese metal that has been used in chemical and metallurgical investigations have passed through a cycle. Most of the investigations made e before the turn of the centur

    Jan 1, 1941

  • NIOSH
    Introduction (47068ab7-53dd-4378-bd75-16215c2111b8)

    Although not immune from the problems affecting the U.S. economy generally, the mineral industry in 1991 contributed nearly $300 billion in the value of processed materials of mineral origin. Supporti

    Jan 1, 1992

  • NIOSH
    IC 8832 Automatic Fire Protection Systems For Surface Mining Equipment

    By William H. Pomroy

    Fire on surface mining equipment is a serious hazard to life and property. The Bureau of Mines, through a program of contract and in-house research, has developed and in-mine demonstrated reasonably p

    Jan 1, 1980

  • NIOSH
    IC 8418 A Statistical Analysis Of U.S. Demand For Phosphate Rock, Potash, And Nitrogen

    By Olman Hee

    This study investigates the identity and relative importance of factors affecting the future demand for phosphate rock, potash, and nitrogen. The main objective is to analyze demand relationships for

    Jan 1, 1969

  • NIOSH
    OFR-134-81 Outcrop Barrier Design Guidelines For Appalachian Coal Mines

    By Mary L. Pearson

    Ibis report summarizes the results of the contract. Included are summaries of existing legislation pertaining to outcrop barriers and a state-of-the-art survey of outcrop barrier designs and related,

    Jan 1, 1981

  • NIOSH
    RI 6003 Metallurgical Testing Of Hawaiian Ferruginous Bauxites

    By W. A. Calhoun

    This report gives results of metallurgical investigations performed by the Bureau of Mines on mineral samples taken during April 1959, from Hawaiian bauxite deposits on the islands of Kauai, Maui, and

    Jan 1, 1962

  • NIOSH
    RI 3268 Progress Reports - Metallurgical Division - 10. Mineral Physics Studies

    By R. S. Dean

    "Applied Mineral Physics, by R. S. Dean.- This is an introduction to the seven papers that follow. It discusses the practical aspects of mineral physics and outlines the theo¬retical viewpoint underly

    Feb 1, 1935

  • NIOSH
    Roof Monitoring in Limestone-Experience with the Roof Monitoring Safety System (RMSS)

    By Thomas E. Marshall, Michael Dunn, L. J. Prosser, Anthony T. Iannacchione

    During the past few years, the Pittsburgh Research Laboratory of the National Institute for Occupational Safety and Health (NIOSH) examined and characterized conditions at a majority of the undergroun

  • NIOSH
    Estimated Sound Power Radiated By Surfaces On A Continuous Miner Tail Section Using Vibration Measurements

    By David S. Yantek

    Miners in underground coal mines experience prolonged exposure to high noise levels, often with A-weighted sound levels in excess of 90 dB. Field tests have shown that the continuous miner conveyor i

  • NIOSH
    RI 3397 Flotation And Agglomerate Concentration Of Nonmetallic Minerals ? Introduction (7e3d70d2-0db4-4cb2-9053-7575b77807ee)

    By Oliver C. Ralston

    [This paper is an expanded revision of a report entitled "Froth Flotation and Agglomerate Tabling of Nonmetallic Minerals, " published in Transactions of the Canadian Institute of Mining and Metallurg

    Jan 1, 1938

  • NIOSH
    RI 3397 Flotation And Agglomerate Concentration Of Nonmetallic Minerals ? Introduction

    By Oliver C. Ralston

    [This paper is an expmded revision of a report entitled "Froth Flota- tion and Agglomerate Tabling of Honmetdlic Idinerds, " published in Trans- actions of the Canadian Ir-stitute of Iriining and !,le

    Jan 1, 1938

  • NIOSH
    RI 7635 Identification And Analyses Of Copper-Base Alloys By Fluorescent X-Ray Spectrography

    By William J. Campbell

    Three types of X-ray analytical instrumentation were compared for applications in the secondary brass and bronze industry. The instruments were a conventional X-ray spectrograph, a portable X-ray spec

    Jan 1, 1972

  • NIOSH
    MLA 36-86 - Mineral Resources Of The Kingston Range Study Area, San Bernardino County, California ? Summary

    By Arel B. McMahan

    The U.S. Bureau of Mines investigated 21 mines, prospects, and mineralized sites in and adjacent to a 38,713-acre portion of the 255,058-acre Kingston Range Wilderness Study Area in 1983. The study ar

    Jan 1, 1986

  • NIOSH
    IC 9506 - Guidelines for Permitting, Construction, and Monitoring of Retention Bulkheads in Underground Coal Mines ? Executive Summary

    By Samuel P. Harteis

    Many mining operations rely on retention bulkheads to provide a barrier between impounded water and active mine workings. However, bulkhead failures can cause catastrophic flooding that puts the under

    Jan 1, 2008

  • NIOSH
    RI 3050 Leaching Copper Ores

    By John D. Sullivan, Alfred P. Towne

    "In copper percolation-leaching plants the ore is usually crushed to a maximum size of about three-eighths inch. Ordinarily an ore is crushed as finely as feasible since the rate of extraction of copp

    Feb 1, 1931