Search Documents
Search Again
Search Again
Refine Search
Refine Search
-
Improved Outlook for Gold and Silver
By Scott, Turner
IN 1933, the monetary metals were produced in a ratio of 6.7 oz. of silver to 1 oz. of gold, the lowest relatively for silver since the period from 1851 to 1865. At the beginning of that period, the v
Jan 1, 1934
-
Zinc used for Money in Belgium and France
By George C. Stone
WHEN George C. Stone, a Director of the Institute, and so well known to our Members in connection with the Institute's many activities was abroad in 1.919, he secured an interesting collection of
Jan 1, 1920
-
Progress in Furnace Refractories
By John D. Sullivan
A DISCUSSION of the developments of the past decade in the field of refractories, and the effect of these developments on the performance and life of open-hearth furnaces, is perhaps best introduced b
Jan 1, 1936
-
Mining In Nicaragua.
By T. Lane Carter
(Canal Zone Meeting , October , 1910.) INTRODUCTION. IT is a curious fact that while in our Transactions there are papers dealing with mining-districts in all parts of the world, in Europe, Asia, Af
Dec 1, 1910
-
Surveying And Sampling Diamond-Drill Holes.
By E. E. White
(Cleveland Meeting, October, 1912.) IN, August, 1911, I read a paper before the Lake Superior Mining Institute' on surveying and sampling diamond-drill holes. The present paper gives a more thor
Nov 1, 1912
-
Ventilating-System at the Comstock Mines. Nevada
By George J. Young
DR . JOHN A . CHURCH, in his treatise on the Comstock Locle 1 gave a full and clear account of the conditions of the mine during the period of greatest activity. The difficulties in the way of deep mi
Nov 1, 1909
-
73. Bishop Tungsten District, California
By Raymond F. Gray, Victor J. Hoffman, Richard J. Bagan, Harold L. McKinley
The first indication of tungsten in the Bishop area was the discovery of scheelite concentrations in a gold placer operation in the ( since named) Tungsten Hills in 1913. After early intermittent prod
Jan 1, 1968
-
Computing Mechanical Classifier Efficiency
By A. J. Weinig
IN the accompanying figure consider the classified AB in closed circuit with a ball mill, wherein T = Tonnage of new feed C = Ratio of circulating load Now consider that the circulating load is mad
Jan 1, 1934
-
Ore Reduction ? Copper and Lead Smelting and Lead Refining
By W. W. Fowler
ORIGINALLY designed for copper smelting only, the reduction works of the Cerro de Pasco Copper Corp. have been expanded over the years until now twelve different metals are produced, together with som
Jan 1, 1945
-
The Zinc-Smelting Industry of the Middle West
By H. C. Meister
THE zinc-smelting industry of the United States has grown very rapidly in recent years and bids fair to outrival that of all other countries in the future. On account of the geographical situation of
Jan 1, 1905
-
Technical Papers and Discussions - Physical Metallurgy - Young's Modulus-Its Metallurgical Aspects (Metals Tech., Dec. 1945, T. P. 1936, with discussion)
By David J. Mack
A survey and critical appraisal of published information about Young's modulus was originally made by the writer because of a complete lack of information about this very important quantity in wo
Jan 1, 1946
-
Position of Silver under the Pittman Act
By Cornelius F. Kelley
DURING the war, events moved with unprecedented rapidity. Situations, industrial, economic and financial, arose over night that stressed to the uttermost the ingenuity and ability of those who dealt w
Jan 1, 1921
-
The Smelting Of Copper 'ores In The Electric Furnace.
By Dorsey Lyon
I. INTRODUCTION. In presenting, this paper the writers wish to call attention first of all to the fact that the electric furnace was not developed as a competitor of the combustion furnace, but: 1.
Jan 8, 1913
-
Rare Metals Becoming More Common
By Paul M. Tyler, Colin G. Fink
THE field of rare metals is so broad that progress can be reported upon many important fronts. Not satisfied with the 92 elements that Mendeleeff and his followers have accepted as legitimate, scient
Jan 1, 1935
-
Present Problems in the Training of Mining Engineers
By DR. SAMUEL B. CHRISTY
? THE man is always greater than his work.? The training of the men who are to develop the mineral resources of the world is the most important problem connected with mining engineering. It becomes ev
Sep 1, 1905
-
Notes On Ruffs Carbon-Iron Equilibrium Diagram.
By Henry M. Howe
(Cleveland Meeting, October, 1912.) Manuscript received Aug. 20, 1912. PROFESSOR RUFF'S most illuminating paper' describing his extremely valuable investigation of the carbon-iron equilib
Nov 1, 1912
-
The Gay-lussac Method Of Silver Determination.
By Frederic Dewey
(New York Meeting, February, 1913) This old and well-known method of determining, silver is, in bullion work, so far superior to the furnace-assay that it is looked upon with reverential awe by many,
Jan 4, 1913
-
The Clinton Iron-Ore Deposits In Alabama.
By ERNEST F. . SURCEIARD
work have been published from time to time by the Survey.' A detailed report on the Birmingham district, with maps, has been completed, and will be published within the next year." In the follow
Nov 1, 1908
-
Chronology of Lead-Mining in the United States
By W. R. Ingalls
THE following chronology presents the history of lead-mining in the United States in a brief form and is a useful reference in connection with the statistics of production 1621. Lead was mined and s
Jan 9, 1907
-
Government Aids to the Mining Industry - Scope of Participation Should Aid Private Enterprise
By Paul M. Tyler
MUCH has been said in print, and much more that was unprintable, about burdensome controls, taxation, and multiplying restrictive, regulatory, or taxing activities of the Federal Government, but not s
Jan 1, 1947