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California, Oregon And Washington - CaliforniaNo records have been found of coal in the old Spanish documents, although some mention of it probably exists in manuscripts. Coal was found in Mt. Diablo, in Contra Costa County, about five miles sout
Jan 1, 1942
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Method for the Determination of Gold and Silver in Cyanide SolutionsBy L. W. Bahney
MANY methods for the determination of gold or silver, or both, in cyanide solutions have been published, which with care in manipulation, and modification in some cases, will give results that are sat
Jan 2, 1915
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A New Method Of Separating Materials Of Different Specific GravitiesBy Thomas Chance
ALL gravity methods for the separation of ore from gangue, or of slate and other refuse from coal, are based upon differences in the falling velocities, in some fluid medium such as air or water, of t
Jan 2, 1918
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A Volumetric Estimation of Manganese In Pig Iron and SteelBy Frederick H. Williams
THE object of this paper is to bring to the attention of those members of the Institute who are interested in the subject, a method for the estimation of manganese, which has been frequently used in t
Jan 1, 1882
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Recent Investigations Of Nickel Laterite Agglomeration For Enhanced Heap LeachingBy Jonas Addai-Mensah
Despite the fact that nickel (Ni) laterites accounts for about 60 % of the world?s nickel mineralization, commercial processing of complex, low grade Ni laterite ores by conventional beneficiation (e.
Sep 1, 2012
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New York Paper - Critical Ranges of Some Commercial Nickel SteelsBy Howard Scott
The great advances made in mechanical engineering during recent years through the use of alloy steels, as illustrated by the development of the airplane and automobile, may be ascribed primarily to th
Jan 1, 1922
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New York Paper - Critical Ranges of Some Commercial Nickel SteelsBy Howard Scott
The great advances made in mechanical engineering during recent years through the use of alloy steels, as illustrated by the development of the airplane and automobile, may be ascribed primarily to th
Jan 1, 1922
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Assessment Of The Risk Of Pile Driving To Juvenile Fish - The ProblemBy James J. Anderson
In this talk I will report on an effort to reassess the risk of pile driving to juvenile salmonids migrating through Puget Sound. The study was motivated by the concern of the construction industry th
Jan 1, 1990
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RI 2839 Development Of Some Fundamentals In The Ferric Sulphate -- Sulphuric Acid ProcessBy Frank S. Wartman
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Jan 1, 1927
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Multi-Component, Multi-Element Refining By Powder InjectionBy Gordon A. Irons
"Powder injection for melt refining is widely practiced in the steel industry, and is gaining acceptance in the non-ferrous industries. In these commercially-important systems, the thermodynamics and
Jan 1, 1996
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22. Copper Deposits in the Nonesuch Shale, White Pine, MichiganBy J. J. Fritts, J. L. Patrick, T. L. Wright, C. O. Ensign, W. S. White, J. W. Trammell, J. C. Wright, D. J. Hathaway, R. J. Leone
The copper deposit at White Pine, Michigan, from which a little more than 5 per cent of United States primary copper currently is produced, is a large stratiform orebody, 4 to 25 feet thick and severa
Jan 1, 1968
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Wind Tunnel Modelling Of Airflow And Pollutant Concentration In A Large Open Pit MineBy Jianliang Li, Xi Peng, Guorong Lu
This paper describes a wind tunnel modelling study on airflow and pollutant concentration in a large open pit mine located in southern China. A 1:1000 scale model of the surface mine was fabricated an
Jan 1, 1993
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Getty Mining Company's Approach To Heap Leaching At The Mercur MineBy Kendall Y. Keuhey
The Mercur Mine, developed and operated by Getty Mining Company, is designed to process 3,000 tons/day of gold ore from the historical Mercur Hill mining district. The mill process involves crushing,
Jan 1, 1983
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Accounting Practice at Climax - Accurate Costs Quickly Available to All Operating DepartmentsBy Joseph Domenico
AMONG others, one of the most important duties of the accounting department is to disclose to the management the cost of production accurately and as quickly as possible after the ore has been produce
Jan 1, 1946
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Virginia Paper - A Volumetric Estimation of Manganese in Pig Iron and SteelBy Frederick H. Williams
The object of this paper is to bring to the attention of those members of the Institute who are interested in the subject, a method for the estimation of manganese, which has been frequently used in t
Jan 1, 1882
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Evolving Micropiles: Optimizing Foundations For Seismic RetrofitBy Rob Jameson
Micropiles are ideally suited to seismic retrofit applications. Their high tensile and compressive capacity can sustain the large concentrated loads induced during seismic events. Micropiles can be
Jan 1, 2008
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Analysis For Mercury In CoalBy M. D. Schlesinger
Mercury exists in coal at very low levels; the structure of coal, the vapor pressure of mercury, and its almost universal occurrence introduce unusual problems into the analytical methods. Round-robin
Jan 1, 1971
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ISACONVERT - Continuous Converting Of Nickel/PGM Mattes - SynopsisBy M. L. Bakker
The ISASMELT? top submerged lance (TSL) bath smelting process was developed in Mount Isa, Australia by Mount Isa Mines Limited (now a subsidiary of Xstrata plc) during the 1980s. By the end of 2011, t
Jan 1, 2011
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Using the Aegis underground drill and blast analyser to optimise drill patterns: A case studyBy P. J. K Leeuw, E. Uludag, M. J. Nong
Efficient drill-and-blast performance is pivotal to the profitability of deep-level mines, where high operating costs and declining grades demand maximum throughput. This study investigated persistent
Oct 2, 2025
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The Progress Of The Metallurgy Of Iron And SteelBy Sir Robert Hadfield
Introduction.-I esteem it a great honor to be asked by this Institute to give them an address chiefly devoted to metallurgy. While it is with great regret that I find myself unable to be present to de
Jan 5, 1914