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  • NIOSH
    IC 6311 Mining Methods And Costs At The Argonaut Mine, Amador County, California ? Introduction

    By William O. Vanderburg

    This paper describing the mining practices at the Argonaut mine, Amador County, California, is one of a series being prepared by the Bureau of Mines on mining practices, methods, and costs in the vari

    Jan 1, 1930

  • NIOSH
    IC 6331 Cobalt ? Introduction

    By Paul M. Tyler

    One by one new metals come to share the burden of modern industry. Long before the Christian era potters and glass workers employed fine and costly blue pigments that contained cobalt. Cobalt blue cla

    Jan 1, 1930

  • NIOSH
    IC 6357 Methods And Costs Of Treatment At The Calumet & Hecla Reclamation Plant

    By C. Harry Benedict

    This paper, describing the leaching practice at the Calumet and Hecla mills, Lake Linden, Mich., is one of a series on milling methods and costs being published by the United States Bureau of Mines.

    Jan 1, 1930

  • NIOSH
    IC 6365 Titanium

    By E. P. Youngman

    Titanium ranks as one of the more abundant elements, is widely distributed, and occurs in concentrated form in numerous deposits. This substance was discoveres 140 years ago; but despite the efforts o

    Oct 1, 1930

  • NIOSH
    IC 6374 Recent Developments in the Mining Industry

    By Scott Turner

    I have been asked to speak briefly about recent progress in the mining industry of the United States, and to touch on the general advancement of en- gineering science as applied to mining. By recent,

    Oct 1, 1930

  • NIOSH
    IC 6382 Mine Ventilation In The Coeur D'Alene Mining District ? Introduction

    By G. E. McElroy

    The Coeur d'Alene minim, district of Shoshone County, Idaho, has been one of the largest and most active lead-silver producing districts in the United States for the last 40 years. The mines of t

    Jan 1, 1931

  • NIOSH
    IC 6383 Mining Bituminous Coal By Stripping Methods - I. Economic Analysis - Introduction

    By Scott Turner

    The present rapid growth of coal stripping in the United States is a curious reversal of the tendency of mining to proceed from outcrop to depth. A combination of technical and economic factors bas st

    Jan 1, 1930

  • NIOSH
    IC 6385 Nitrogen and its Compounds

    By Bertrand L. Johnson

    Before 1914 , Chile , because of her extensive resources of natural nitrates , practically monopolized the world markets for one of the leading fertilizer materials . Since nitrogen also is an importa

    Jan 1, 1931

  • NIOSH
    IC 6386 Deposits of Titanium-Bearing Ores

    By E. P. Youngman

    The rapidly growing demand for titanium pigments has aroused new interest in actual and potential sources of supply of titanium- bearing ores , which only a comparatively few years ago were almost unm

    Oct 1, 1930

  • NIOSH
    IC 6387 Bromine and Iodine

    By Paul M. Tyler, Amy B. CLINTON

    The four elements fluorine (F), chlorine (C1), bromine (Br), and iodine (I) form the most intimate family in the entire system of elements and are grouped under the name "halogens" or salt formers (by

    Nov 1, 1930

  • NIOSH
    IC 6389 Platinum

    By Paul M. Tyler, R. M. Santmyers

    Platinum and its allied metals osmium, iridium, rhodium , palladium, and ruthenium are the most costly of the better-known metals and combine properties that make them unique among the elements . For

    Feb 1, 1931

  • NIOSH
    IC 6391 Diatomite

    By Paul Hatmaker

    Diatomite is the name now generally given to a mineral substance composed of the tiny , skeletal remains of diatoms , which are microscopic , flowerless , water plants related to the algae ... This re

    Feb 1, 1931

  • NIOSH
    IC 6410 Mining By The Top-Slicing Method, With Some Notes On Sublevel Caving ? Introduction

    By Chas. F. Jackson

    This paper is one of a series dealing with mining methods and costs, prepared and published under the sponsorship of the United States Bureau of Mines and made possible through the cooperation f many

    Jan 1, 1931

  • NIOSH
    IC 6423 Compendium of Limes in Hydrometallurgy and Flotation

    By R. G. O'MEARA, Alexander M. Gow, W. T. SCHRENK

    Lime is used extensively in the various industries. The National Lime Association in an excellent and recent bulletin lists 23 important in- dustries in which lime plays a vital role; and it thereby j

    Apr 1, 1931

  • NIOSH
    IC 6437 Magnesite

    By Paul M. Tyler

    Magnesite is of importance primarily as a refractory material for lining steel furnaces , although substantial amounts are used in the production of flooring compositions and other building materials

    May 1, 1931

  • NIOSH
    IC 6440 Mining Methods And Practices At The United Verde Copper Mine, Jerome, Ariz. - Introduction

    By T. W. Quayle

    This paper describing mining practices at the United Verde copper mine, Jerome, Ariz., is one of a series being prepared by the Bureau of Mines on mining practices, methods, and costs in the various m

    Jan 1, 1931

  • NIOSH
    IC 6456 Zirconium. II. Domestic and Foreign Deposits

    By E. P. Youngman

    Zirconium, formerly distinctly a rare element, is rapidly becom- ing of rather extensive commercial importance. Economic features of the zirconium industry, together with general information regarding

    Jun 1, 1931

  • NIOSH
    IC 6473 Quartz and Silica Part II Quartz Quartzite and Sandstone

    By R. M. Santmyers

    Except for optical purposes and a few other special uses quartz and quartzite are to a considerable degree interchangeable. This also may be said with respect to pulverized quartz and ground silica sa

    Aug 1, 1931

  • NIOSH
    IC 6474 Quartz and Silica Part III Sand and Miscellaneous Silicas

    By R. M. Santmyers

    Of the sand and miscellaneous silica produced in the United States , ordinary sand and gravel are , of course , the most important, at least as regards volume of output . The building- construction in

    Aug 1, 1931

  • NIOSH
    IC 6475 Rhenium and Masurium

    By Paul M. Tyler

    Masurium and rhenium are two elements known only to a few scientists and known to them for scarcely more than five years . The existence of two members of the manganese family was long suspected , and

    Jul 1, 1931