Volume 241
Society of Mining Engineers of AIME
1968
Coal, Economics, Geology, Industrial Minerals, Minerals Beneficiation, Mining, Operations Research, Rock Mechanics

Title Page

Foreword by Raymond H. Feierabend

Contents

Coal

TITLE	AUTHOR
Flowsheet Changes for Decreased Moisture of Concord Mine Coal	J. D. Allen
Quality Control of Coal: Testing of the Cendrex X-Ray Ash Meter	J. Hudy, Jr.
Rocky Mountain Coal Resources and Their Potential Utilization	T. Reed Scollon
Flotation Recovery of Pyrite From Bituminous Coal Refuse	S. C. Sun and K. I. Savage
A New and Low Cost Method for Making Structural Materials from Problem Flyashes	H. E. Shafer, Jr., C. F. Cockrell and J. W. Leonard
Hydraulic Stowing Techniques in Armutcuk Mine, Turkey	Mehmet Guney

Economics

TITLE	AUTHOR
What Is A "Have Not" Nation (The 1968 Jackling Lecture)	Francis Cameron
An Econometric Approach to Measures of Productivity in Mining	Richard T. Newcomb

Geology

TITLE	AUTHOR
Regional Metallotectonic Zoning in Mexico	J. W. Gabelman and S. V. Krusiewski
Geology and Mineralization of the Main Mineral Zone of the Santa Eulalia District, Chihuahua, Mexico	William Paxton Hewitt
Structural Elements of Ore Search in the Basin and Range Province, Southeast Arizona: Domes and Fracture Intersections	Jacques B. Wertz

Industrial Minerals

TITLE	AUTHOR
Water Resources of the Mississippi Embayment East of the Mississippi River	E. H. Boswell and E. M. Cushing
Sulfur From Petroleum Gases and Liquids	A. E. Chute
Quartz-Gangue or Mineral: The Effect of Temperature on Its Electrostatic Separation	H. Leslie Bullock

Minerals Beneficiation

TITLE	AUTHOR
The Abnormal Behavior of Some Ore Constituents and Their Effect on Blast Furnace Operation	S. Watanabe and M. Yoshinuga
Heavy Liquid Recovery Systems in Mineral Beneficiation	R. B. Tippin and E. C. Tveter
Automatic Control of Moisture in Pelletizing and Sintering Process By Means of Systems Based on the Measurement of Electrical Resistance	L. V. Fegan, Jr. and C. E. Taylor, Jr.
The Depression of Sphalerite and Pyrite by Basic Complexes of Copper and Sulfhydryl Flotation Collectors	J. Steininger
Mechanisms of Soluble Salt Flotation. Part I	R. J. Roman, M. C. Fuerstenau and D. C. Seidel
Mechanisms of Soluble Salt Flotation. Part II	D. C. Seidel, R. J. Roman and M. C. Fuerstenau
Reduction and Magnetic Separation of Manganiferous Iron Ores by the R-N Process	N. F. Schulz and H. A. Lex
Experience With Bin Dischargers in the Cement Industry	Z. F. Oszter
A Comparison of Data from Bond Type Simulated Closed-Circuit and Batch Type Grindability Tests	R. W. Smith and K. H. Lee
On Incipient Flotation Conditions	P. Somasundaran and D. W. Fuerstenau
The Relationship Between Adsorption at Different Interfaces and Flotation Behavior	P. Somasundaran
High-Temperature Thin-Film Sulfidization of Hematite for Recovery by Flotation	T. D. Chatwin and M. E. Wadsworth
The Role of Dixanthogen in Xanthate Flotation of Pyrite	M. C. Fuerstenau, M. C. Kuhn and D. A. Elgillani
Treatment of Refractory Copper Ores by the Segregation Process	E. T. Pinkney and N. Plint
The Behavior of Mesabi Iron and Silicate Minerals in 20-Kilogauss Magnetic Fields	J. E. Lawver, J. L. Wright and H. R. Kokal
The System Fe-Mn-SiO2-O2 and Its Application to the Beneficiation of Manganiferous Iron Ores by Reduction Roasting	R. L. Bleifuss and G. L. Tufford
Statistics of Random Fracture	L. G. Austin and R. R. Klimpel
A Hydrothermal Process for Oxidized Nickel Ores	D. C. Seidel and E. F. Fitzhugh, Jr.
The Influence of Sodium Silicate in Nonmetallic Flotation Systems	M. C. Fuerstenau, G. Gutierrez and D. A. Elgillani
The Flotation of Fluorite as a Function of Ionic Point Imperfections	B. V. P. Rao, H. L. Lovell and G. Simkovich
Adsorption of Calcium, Magnesium, and Sodium Ion by Quartz	S. W. Clark and S. R. B. Cooke
The Application of Size Distribution Equations to Multi-Event Comminution Processes	C. C. Harris
Batch Grinding Kinetics	C. C. Harris
Grindability Measurements and the Determination of Energy-Size Parameters	Gordon E. Agar
Design Criteria for Bin Feeders	H. Colijn and P. J. Carroll
The Influence of the Environment on the Comminution of Quartz	I. J. Lin and A. Mitzmager
Mineralogical and Beneficiation Studies of the Copper-Nickel Bearing Duluth Gabbro	A. Vifian and I. lwasaki
Electrochemical Studies of the Xanthate-Dixanthogen System on Pyrite	H. Majima and M. Takeda
Mechanisms Involved In Cyanide Depression of Pyrite	D. A. Elgillani and M. C. Fuerstenau
The Design and Calibration of a Faraday Pail for Measuring Charge Density of Mineral Grains	James E. Lawver and James L. Wright
Size Reduction-Time Relationships of Batch Grinding	C. C. Harris
Flotation Characteristics of Pyrolusite	M. C. Fuerstenau and D. A. Rice
Flotation of Artificial Sulfide Minerals	Theodore Balberyszski, Strathmore R. B. Cooke, and Adrian C. Dorenfeld
The Effect of Cations on the Amine Flotation of Quartz	David M. Hopstock and Gordon E. Agar
Compression Testing of Green and Dry Iron Ore Pellets	David S. Cahn and John M. Karpinski
A Quantitative Investigation of the Closed Grinding Circuit	R. T. Hukki and Hans Allenius
Ultrafine-Particle Concentration and the Strength of Unfired Iron Ore Pellets	Rodney L. Stone and David S. Cahn
The Zero Order Production of Fine Sizes in Comminution and Its Implications in Simulation	J. A. Herbst and D. W. Fuerstenau
Liquid-Liquid Extraction of Ultrafine Particles	Ralph W. M. Lai and D. W. Fuerstenau

Open Pit Mining

TITLE	AUTHOR
Aluminum Off-Highway Truck Bodies for the Mining Industry	R. A. Esmonde
Application of Rippers in Mining	D. V. Fites

Operations Research

TITLE	AUTHOR
Optimum Production Planning	C. B. Manula and Y. C. Kim

Rock Mechanics

TITLE	AUTHOR
Soil Plasticity and the Movement of Material in Ore Passes	W. G. Pariseau and E. P. Pfleider
Theory of Similitude as a First Approximation in the Design of Coal Pillars	Robert M. Cox, Jr., and Phillip E. Deering
Stress Required to Initiate Core Discing	A. J. Durelli, Leonard Obert and V. J. Parks
In Situ Stress Measurements from Tilts Induced by Mining Operations	R. K. McConnell, Jr., and Ivan Simon
Interfacial Friction, Moisture and Coal Pillar Strength	Charles T. Holland and David A. Olsen
Application of Extreme Value Statistics to Test Data	Tuncel M. Yegulalp and Malcolm T. Wane
Elasticity Studies of Isotropic and Anisotropic Rock Samples	Ernest A. Kaarsberg
Mine Subsidence and Model Analysis	William G. Pariseau and H. Douglas Dahl
Photoelastic Analysis of A Composite Model	R. K. Agarwal
Bureau Contribution to Slope Angle Research at the Kimbley Pit, Ely, Nevada	Robert H. Merrill
Finite Element Model Study of Slope Modification at the Kimbley Pit	Wilson Blake

Technical Notes

TITLE	AUTHOR
Formation of Artificial Acmite Above 500°F During the Extraction of Silica from Wisconsin Gogebic Taconite by Digestion in Sodium Hydroxide Solutions	T. G. Sieber and T. D. Tiemann
Hydrogenated Coal Bitumen-A New Material for Highway Construction	H. F. Silver
Flotation of Right- and Left-Hand Quartz Using an Optically Active Collector	K. Takahashi and I. Iwasaki
A Continuous-Weighing Laboratory Cell for Electrowinning Manganese	I. Iwasaki and W. J. Carlson, Jr.
Beneficiation of Low-Grade Gypsum by Electronic Color Sorting	Robert R. French
The Adsorption of Long-Chained Amines on Quartz	Knut L. Sandvik and Aage Solbakken

Discussion of Papers

TITLE	AUTHOR
An Infrared Study of the Activation and Flotation of Beryl with Hydrofluoric and Oleic Acid	A. S. Peck and M. E. Wadsworth Discussion by Ross W. Smith and T. James Smolik
A Comparison of Data from Bond Type Simulated Closed Circuit and Batch Type Grindability Tests	R. W. Smith and K. H. Lee Discussion by Fred C. Bond
The Use of Curvilinear Multiple Correlation Analysis In Computer Simulation of Complex Models	W. H. Yarroll Discussion by W. A. Griffith
The Relationship Between Adsorption at Different Interfaces and Flotation Behavior	P. Somasundaran Discussion by Knut L. Sandvik
The Role of the Hydrocarbon Chain in Anionic Flotation of Calcite	M. C. Fuerstenau and J. D. Miller Discussion by N. P. Finkelstein
Statistics of Random Fracture	L. G. Austin and R. R. Klimpel Discussion by C. C. Harris

Corrections

TITLE	AUTHOR
The Importance of Aerodynamic Aspects in the Design of Mine Shafts Page 181	C. E. Gregory
The Role of the Hydrocarbon Chain in Anionic Flotation of Quartz Page 364	M. C. Fuerstenau and J. D. Miller
Treatment of Refractory Copper Ores by the Segregation Process Page 436	E. T. Pinkney and N. Plint

INDEX

TITLE	AUTHOR
Index