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  • NIOSH
    IC 6481 Organization Plan of the Holmes Safety Association

    By M. J. Ankeny, J. J. Forbes

    The United States Bureau of Mines often receives inquiries from the mineral , petroleum , and allied industries concerning the essential steps to be taken in the formation of Holmes Safety chapters an

    Jul 1, 1931

  • NIOSH
    IC 6493 Opals

    By I. AITKENS

    The opal , long in disfavor because it was considered " unlucky, " has become much more popular in recent years . For variety and beauty of color the precious opal is without a peer . These colors do

    Sep 1, 1931

  • NIOSH
    IC 6516 Mining Laws of Great Britain

    By E. P. Youngman

    Great Britain has never had a basic raining law such as is in force in most foreign countries. This lack may be due to the fact that, with the exception of gold and silver, all metals or minerals belo

    Oct 1, 1931

  • NIOSH
    IC 6523 Pyrites General Information

    By Robert H. Ridgway

    This circular outlines salient facts regarding the pyrites industry of the United States and the world. It is founded chiefly upon published information available in the literature of the subject. The

    Sep 1, 1931

  • NIOSH
    IC 6524 Utilization of Dolomite and High-Magnesium Limeston

    By Paul Hatmaker

    This paper covers briefly the particular field of dolomite and magnesium limestone; certain uses of high-calcium limestone are mentioned only to show more clearly the limita¬ tions of the magnesian ro

    Sep 1, 1931

  • NIOSH
    IC 6532 Methods And Costs Of Concentrating Tungsten Ores At Atolia, San Bernardino County, Calif. ? Introduction

    By W. O. Vanderburg

    This paper describing the methods of concentrating tungsten pros at the mills of the Atolia Mining Co. is one of a series of similar papers being prepared by the United States Bureau of Mines. The wr

    Jan 1, 1931

  • NIOSH
    IC 6552 Mining Laws of Egypt

    By E. P. Youngman

    Gold and precious stones were mined in Egypt in prehistoric times. This mining, carried on at intervals, extended over thousands of years, until about 1300 A. D. Then ensued a dormant period of severa

    Jan 1, 1932

  • NIOSH
    IC 6560 Pumice and Pumicite

    By Paul Hatmaker

    Pumice and pumicite are siliceous volcanic substances quite similar in chemical composition , but somewhat different in physical properties , manner of formation , and mode of occurrence . Production

    Mar 1, 1932

  • NIOSH
    IC 6562 Abrasive and Industrial Diamonds

    By Paul M. Tyler

    "In preparing this paper the writer has perforce depended mainly upon published information, including the catalogs and pamphlets issued by importers and dealers such as the Diamond Drill Carbon Co. a

    Mar 1, 1932

  • NIOSH
    IC 6563 Soapstone

    By H. Herbert Hughes

    Soapstone commonly is associated with talc , and reports on either commodity usually contain a discussion of the other . From a geological or mineralogical standpoint the combination is justifiable ,

    Feb 1, 1932

  • NIOSH
    IC 6574 Milling Methods At The Balmat Mill Of The St. Joseph Lead Co., Balmat, St. Lawrence County, N. Y. - Introduction

    By John B. Knaebel

    This paper, describing the milling operations of the St. Joseph Lead Co. at Balmat, N. Y., is one of a series of similar papers being prepared by the United States Bureau of Mines on practice at vario

    Jan 1, 1932

  • NIOSH
    IC 6576 A Tabular Review of State Laws Relating to Taxation and Inspection of Gaoline and Other Petroleum Products

    By ARCH L. FOSTER

    The rapid increase in the mmber of automobiles during the last 25 years has resulted in the insistent and growing demand for better roads of more permanent construction. Some form of State license for

    Jan 1, 1932

  • NIOSH
    IC 6579 Sodium and Potasium Metals

    By Paul M. Tyler

    The alkali metals , sodium and potassium , and more particularly sodium , occur abundantly in chemical combination with other elements . The elements themselves are available in metallic form but are

    Apr 1, 1932

  • NIOSH
    IC 6607 Mining, Treatment Methods, And Costs At The Plant Of The Consolidated Rock Products Co., Durbin, Calif. - Introduction

    By Harry D. Jumper

    This paper describing the methods of ruining a sand, gravel, and bowlder deposit 20 miles east of Los Angeles, and the classification and preparation of these materials for market, is one of a series

    Jan 1, 1933

  • NIOSH
    IC 6611 Small-Scale Placer-Mining Methods ? Introduction

    By Chas. F. Jackson

    During the current business depression the Bureau of Mines has received many inquiries concerning placer mining, the prospects for men of small means to make wages by small-scale placer operations, th

    Jan 1, 1932

  • NIOSH
    IC 6624 Magnetic Concentration Methods And Costs Of Witherbee, Sherman & Company, Mineville, N.Y. ? Introduction

    By T. F. Myners

    This paper, describing the concentration methods and costs of Witherbee, Sherman and Company at Mineville, N. Y., is one of the series of papers on milling methods and costs being prepared by the Unit

    Jan 1, 1932

  • NIOSH
    IC 6627 Iron Oxide Pigments and Mortar Colors

    By R. M. Santmyers

    The pigments, whose colors are due primarily to iron exides and iron hydroxides, comprise a variety of yellow, brown, red, and sometimes black paint-coloring agents, both natural and artificially prep

    May 1, 1932

  • NIOSH
    IC 6632 Mining Laws of Haiti

    By E. P. Youngman

    By a decree of March 14, 1929,5 the President of the Faitian Repub- lic, considering it to be necessary, until the mining legislation of the Republic shall have been revised, to put into effect the mi

    Jun 1, 1932

  • NIOSH
    IC 6633 Mining Laws of the Unfederated Malay States

    By E. P. Youngman

    In the Unfederated Malay States, with the exception of Johore, the rights of suzerainty, protection, and administration were transferred by giam to the British Government in 1909. In the States of Kel

    Jun 1, 1932

  • NIOSH
    IC 6634 Mining Laws Of Greece ? Prefatory Note

    By E. P. Youngman

    This paper is one of a series of digests of foreign mining legislation and court decisions that is being prepared in advance of a general report relative to the right of American citizens to explore f

    Jan 1, 1932