Volume 190
Mining Branch 1951
Metal Mining, Minerals Beneficiation, Coal, Industrial Minerals, Geology, Mineral Industry Education, Geophysics

Title Page

Foreword. By Richard M. Foose

Contents

Metal Mining

TITLE	AUTHOR
Classification of Block Caving and Draw Methods	F. S. McNicholas
Rock Hardness as a Factor in Drilling Problems	W. B. Mather
Discussion	W. B. Mather
New Mining Methods Tested by Menominee Range Iron Ore Producers	Philip D. Pearson and Warren W. Jamar
Factors Influencing the Choice of a Loading Machine	Donald W. Mitchell
Diesel Truck Haulage Through Inclined Adit	V. C. Allen
Production Jet-Piercing of Blastholes in Magnetic Taconite	D. H. Fleming and J. J. Calaman
Recent Operating Improvements at Kennecott's Utah Copper Mine	L. F. Pett
Developing Mesabi Orebodies Under Lake Beds	James R. Stuart
A Graphic Statistical History of the Joplin or Tri-State Lead-Zinc District	John S. Brown
The Metal Mining Industry in Japan	Robert Y. Grant
Application of Geology to Mining at Giant Yellowknife	J. D. Bateman
Tungsten Carbide Drilling on the Marquette Range	A. E. Lillstrom

Minerals Beneficiation

TITLE	AUTHOR
Radiotracer Studies on the Interaction of Dithiophosphate with Galena-The Depressant Action of Phosphate	G. L. Simard, M. Burke, and D. J. Salley
Flotation Tests on Korean Scheelite Ore	Will Mitchell, Jr., C. L. Sollenberger, And T. G. Kirkland
Discussion	Will Mitchell, Jr., C. L. Sollenberger, And T. G. Kirkland
Practical Design Considerations for High Tension Belt Conveyor Installations	J. W. Snavely
New Method for Recovery of Flake Mica	R. Adair, W. T. McDaniel, And W. R. Hudspeth
Discussion	R. Adair, W. T. McDaniel, And W. R. Hudspeth
A New Surface Measurement Tool for Mineral Engineers	F. W. Bloecher, Jr.
Discussion	F. W. Bloecher, Jr.
Grinding Mills as Conditioners in Sulphide Flotation	C. G. McLachlan
A Calorimetric Method for Studying Grinding in a Tumbling Medium	A. Kenneth Schellinger
Concentration of the Complex Copper-Lead-Cobalt-Nickel Ores of Southeast Missouri	M. M. Fine, W. E. Brown, G. J. Vahrenkamp, and R. G. Knickerbocker
Metallurgical Applications of the DorrClone	Frank T. Weems
Comparative Results with Galena and Ferrosilicon at Mascot	D. B. Grove, R. B. Brackin And J. H. Polhems
Discussion	D. B. Grove, R. B. Brackin And J. H. Polhems
Adsorption of Silver Ion by Sphalerite	A. M. Gaudin, H. R. Spedden, and M. P. Corriveau
Flotation Rates and Flotation Efficiency	Nathaniel Arbiter
Discussion	Nathaniel Arbiter
Magnetic and Chemical Analyses of Ores and Mill Products Containing Magnetite and Ilmenite	Erkki Laurila, O. Jantti, And R. T. Hukki
Destruction of Flotation Froth with Intense High-Frequency Sound	Shiou-Chuan Sun
Collector Mobility and Bubble Contact	M. D. Hassialis And C. G. Myer
Progeny in Comminution	A. M. Gaudin, H. R. Spedden, And D. F. Kaufman
Jaw Crusher Capacities, Blake and Single-Toggle or Overhead Eccentric Types	D. H. Gieskieng
Basic Laboratory Studies in the Unit Operation of Crushing	J. W. Axelson, J. T. Adams, Jr., J. F. Johnson, J. N. S. Kwong, And E. L. Pire
Five Variable Flotation Tests Using Factorial Design	A. D. Dorenfeld
Twisted Return Runs for Conveyor Belts	J. W. Snavely

Coal

TITLE	AUTHOR
High-speed Classification and Desliming with the Liquid-Solid Cyclone	D. A. Dahlstrom
Discussion	D. A. Dahlstrom
The Graphite of the Passau Area, Bavaria	R. G Wayland
A Pattern for Sound Fuel Procurement	Marshall Pease. Jr. And R. J. Brandon
Coal Preparation in England and Holland	John Griffen
Discussion	John Griffen
Application of Cyclone Thickeners to Preparation Plant Water Circuits	G. H. Kennedy and H. E. Criner
An Investigation of the Abrasiveness of Coal and Its Associated Impurities	H. F. Yancey, M. R. Geer, and J Price
Development of the South American Coal Industry	Thomas Fraser
An Approximate Method of Predicting and Comparing Expected Results When Dewatering Coal by Centrifuges	Orville R. Lyons
Factors Influencing the Choice of a Loading Machine	D. W. Mitchell
Discussion	D. W. Mitchell
Primary and Secondary Mining with Auger Equipment	D. M. Bondurant
Simultaneous vs. Consecutive Working of Coal Beds	H. H. Hasler
Efficiency and Sharpness of Separation in Evaluating Coal-Washery Performance	H. F. Yancey and M. R. Geer
Discussion	H. F. Yancey and M. R. Geer
Economic Significance of Recent Technologic Research On Solid Fuels	A. C. Fieldner and R. L. Brown
Cyclone Thickeners, A Practical Solution for Closed Water Circuit Operation	Victor Phillips and J. P. Blair
Acid Drainage from Coal Mines	S. A. Braley
Characteristics of Mechanized Mining Sections	A. W. Asman and A. W. Bitner
Filter Cake Size-Consist and Moisture Relationships	Orville R. Lyons
Using Electric Furnaces and Heaters to Determine the Free-Swelling Index of Coal	E. Swartzman and G. C. Behnke
The Formation of Acid Mine Drainage	K. L. Temple and A. R. Colmer

Industrial Minerals

TITLE	AUTHOR
Geology, Mining, and Uses of Strategic Pegmatites	Richard H. Jahns
The Graphite of the Passau Area, Bavaria	R. G. Wayland
Rock Hardness as a Factor in Drilling Problems	W. B. Mather
Discussion	W. B. Mather
Fullers Earth, A General Review	R. C. Amero
Industrial Salts: Production at Searles Lake	J. E. Ryan
Economic Aspects of Ground Water in Florida	V. T. Stringfield and H. H. Cooper, Jr.
The Calaveras Cement Co. Dust Suit	W. W. Mein, Jr.
Production Jet-Piercing of Blastholes in Magnetic Taconite	D. H. Fleming and J. J. Calaman
The History and Development of Phosphate Rock Mining	R. B. Full
Occurrence and Exploration of Georgia's Kaolin Deposits	Thomas L. Kesler
Use of Isopachous and Related Maps in the Florida Phosphate District	Thomas E. Wayland
Industrial Minerals of North Carolina	J. L. Stuck
Operational Studies in the Pennsylvania Slate Industry	W. F. Mullen and C. W. Stickler

Geology

TITLE	AUTHOR
Rock Hardness as a Factor in Drilling Problems	W. B. Mather
Discussion	W. B. Mather
Shallow Expressions of Silver Belt Ore Shoots. Coeur d'Alene District, Idaho	Robert E. Sorenson
A Graphic Statistical History of the-Joplin or Tri-State Lead-Zinc District	J. S. Brown
Occurrence and Exploration of Georgia's Kaolin Deposits	Thomas L. Kesler
Application of Geology to Mining at Giant Yellowknife	J. D. Bateman
Mine Drainage Studies in the Iron Ranges of Northern Michigan	W. T. Stuart

Mineral Economics

TITLE	AUTHOR
"Depletion" in Federal Income Taxation of Mines	K. S. Benson

Geophysics

TITLE	AUTHOR
Geophysics on the Pennsylvania Turnpike	H. LeRoy Scharon and A. B. Cleaves
Contribution of Geophysical Surveys to the Discovery of Stilfontein Gold Mine in South Africa	Oscar Weiss
The Hotchkiss Superdip as a Vertical Intensity Magnetometer	W. A. Longacre

Technical Notes

TITLE	AUTHOR
Beaker Flotation as a Quantitative Tool in Flotation Testing	William Loblowitz
Approximation of the Energy Efficiencies of Commercial Ball Mills by the Energy Balance Method	A. K. Schellinger and R. D. Lalkaka
Flotation of Diamonds	R. G. Weavind, I. Wolf, and R. S. Young

Discussions

TITLE	AUTHOR
Discussions

Discussion of Papers Published Prior to 1951

TITLE	AUTHOR
A New Theory of Comminution (1950) 187, p 871
The Probability Theory of Wet Ball Milling and Its Application (1950) 187, p. 1267	E. J. Roberts
Progress Report on Grinding at Tennessee Copper Co. (1950) 187, p. 1133	J. F. Myers and F. M. Lewis
The Cleaning of Fine Sizes of Bituminous Coals by Concentrating Tables (1950) 187, p. 956	R. E. Zimmerman

Extractive Metallurgy
As many members of the Mining Branch are interested in the papers of the Extractive Metallurgy Division, the titles of the papers published for that Division in 1951 are listed below. These papers and discussion, appear in Transactions (1951) 191, Metals Branch

TITLE	AUTHOR
Industrial Hygiene at American Smelting and Refining Company	John N. Abersold and K. W. Nelson
Sintering Practice at Josephtown Smelter With discussion	H. K. Najarian, Karl F. Peterson, and Robert E. Lund
Preparation of Titanium Tetrachloride from Rutile	C. H. Gorski
Reverse Leaching of Zinc Calcine	L. P. Davidson, R. K. Carpenter, and H. J. Tschirner
Metallurgical Reactions of Fluorides With discussion	H. H. Kellogg
El Paso Refinery of Phelps Dodge Refining Corporation	B. B. Kunkle
Sulphur Activities in Liquid Copper Sulphides	R. Schuhmann and O. W. Moles
Vacuum Treatment of Parkes' Process Crusts on a Pilot-Plant Scale	A. W. Schlechten and R. F. Doelling
Extraction of Alumina from Haiti and Jamaica Bauxites	T. D. Tiemann
Thermodynamics of Iron-Silicate Slags: Slags Saturated with Gamma Iron With discussion	R. Schuhmann, Jr. and P. J. Ensio
Metallurgy of Cobalt Production from Cupriferous Pyrite	Sanai Nakabe
Relationships Between Germanium and Cadmium in the Electrolysis of Zinc Sulphate Solutions	S. T. Ross and J. L. Bray
Electric Furnace Melting of Copper at Baltimore	Peter R. Drummond
Separation of Copper from Zinc by Ion Exchange	Ernest J. Breton, Jr. and A. W. Schlechten
Arc Melting of Titanium Metal With discussion	S. F. Radtke, R. M. Scriver, and J. A. Snyder
Production of Aluminum from Kalunite Alumina	Arthur Fleischer and Julian Glasser
Recovery of Vanadium from Titaniferous Magnetite	Sandford S. Cole and John S. Breitenstein
Low Grade Bauxites and Clays as Potential Aluminum Resources	K. K. Kershner, C. W. Funk, and W. A. Calhoun
Rate of Evaporation of Zinc at Low Pressures	H. W. St. Clair and M. J. Spendlove

INDEX

TITLE	AUTHOR
Index