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Articles 58561 - 58590 of 59468
Full-Text Articles in Entire DC Network
Electrowinning With Amalgam Electrode, Ralph V. Anderson Jr.
Electrowinning With Amalgam Electrode, Ralph V. Anderson Jr.
Bachelors Theses and Reports, 1928 - 1970
Amalgam Metallurgy, a relatively new expression in the technology of metal extraction, was first chosen to describe certain new processes developed at the Duisburg Copper Works in Germany. The idea of using mercury, a costly and poisonous metal, as an intermediate in heavy chemical industry and in polarography are of recent origin; with the exception of a series of patents of little significance and occasional comments in the literature, the work is hardly known.
Chemical Analysis Of Igneous Rocks And Variation Diagrams Of Petrographic Provinces Of Montana, Frederick M. Hilpert
Chemical Analysis Of Igneous Rocks And Variation Diagrams Of Petrographic Provinces Of Montana, Frederick M. Hilpert
Bachelors Theses and Reports, 1928 - 1970
A total of 179 chemical analyses of igneous rocks are available for the state of Montana, but these analyses do not cover the entire state in a satisfactory manner. There has been an emphasis on the central part of the state, and an almost complete lack of interest in the southern portion of Montana.
Polarographic Analysis Applied To Metallurgical Solutions And Products, Donald W. Johnson
Polarographic Analysis Applied To Metallurgical Solutions And Products, Donald W. Johnson
Bachelors Theses and Reports, 1928 - 1970
The polarograph has been applied to a large number of chemical and metallurgical analyses, and is especially applicable to solution control analysis and to the determination of minute quantities of ions in the presence of large amounts of other ions.
Metal Production From Ore Deposits In Different Host Rocks In Montana, Robert F. Gale
Metal Production From Ore Deposits In Different Host Rocks In Montana, Robert F. Gale
Bachelors Theses and Reports, 1928 - 1970
It is known that many different kinds of rocks serve as host to the ore deposits of Montana, but the relative importance of each of these kinds of rock as a host for ore deposits has never been described in any published report.
Determination Of The Activities Of Indium And Mercury And The Vapor Pressures Of Mercury Over These Amalgams From 0.00216 To 0.02494 Mole Fraction Indium At 25 C And From 0.00067 To 0.02410 Mole Fraction Indium At 70 C By Electromotive Force Measurements, Arthur H. Lutts
Bachelors Theses and Reports, 1928 - 1970
This work was performed to determine by experimental means the activities of both indium and mercury and the vapor pressures of mercury over these amalgams at 25 and 70 C.
Vacuum Distillation Of Zinc And Cadmium From Zinc Leach Purification Cake, Stiles R. Slosson
Vacuum Distillation Of Zinc And Cadmium From Zinc Leach Purification Cake, Stiles R. Slosson
Bachelors Theses and Reports, 1928 - 1970
The term "vacuum distillation" is used to describe the process employed when certain elements are separated either from their mother compounds or from one another by distilling them under reduced atmospheric pressure.
Electrowinning Versus Electrorefining Of Blister Copper, Frank J. Vorell
Electrowinning Versus Electrorefining Of Blister Copper, Frank J. Vorell
Bachelors Theses and Reports, 1928 - 1970
In the following sections of this report, I will discuss as fully as possible both the theoretical and practical aspects of the roasting, leaching, and electrowinning steps, as well as the economic considerations of the process. The results of my laboratory work will, of course, be integrated to the process.
Ferromagnetic Alloys In The System Cu-Mn-Zn, W. Michael Yim
Ferromagnetic Alloys In The System Cu-Mn-Zn, W. Michael Yim
Bachelors Theses and Reports, 1928 - 1970
The purpose of this investigation is to determine whether ferromagnetic alloys exist in the ternary system Cu-Mn-Zn analogous to the other Heusler alloys. The work in this thesis is a preliminary investigation on these alloys using a common metallographic research technique and augmented with X-ray methods.
A Determination Of Reflectivity Of Opaque Ore Minerals With A Weston Ii Light Meter, Louis L. Bergan
A Determination Of Reflectivity Of Opaque Ore Minerals With A Weston Ii Light Meter, Louis L. Bergan
Bachelors Theses and Reports, 1928 - 1970
Measurements of reflectivity of opaque ore minerals can be made with the common photographic light meter and a standard reflecting microscope, both of which are available to most Geology laboratories. During the course of the investigation, approximately 30 minerals were examined, of which 10 were duplicates. Comparable results, for the most part within 3% of previously determined valued, were obtained.
Electro-Galvanizing From A Purified Ammonium Sulphate Leach Of Anaconda Zinc Calcine, Phillip J. Mischkot Jr.
Electro-Galvanizing From A Purified Ammonium Sulphate Leach Of Anaconda Zinc Calcine, Phillip J. Mischkot Jr.
Bachelors Theses and Reports, 1928 - 1970
Ever since the introduction of metal products into our civilization, especially those of iron and steel, man has been confronted with the problems of corrosion prevention. As the agents which are conducive to corrosion cannot be completely eliminated, it has been necessary for man to develop processes and materials that will retard the degeneration of the metals that are so important to our industrialized world.
Resistance Of Solid Inconel To Attack By Liquid Indium, David C. Hendra
Resistance Of Solid Inconel To Attack By Liquid Indium, David C. Hendra
Bachelors Theses and Reports, 1928 - 1970
The role of liquid metals in industry is rapidly becoming of increasing importance. The physical and chemical tendencies of metals in the liquid condition must be ascertained before a metal in this form can be put to practical usage. In very many stages of mineral processing and recovery, in molten-metal baths for temperature control on heat treating, and in several industries where heat transfer is an important aspect, metals may be at one time or another in a liquid condition.
Production Of Sponge Iron From Pyrites, Robert W. Leeson
Production Of Sponge Iron From Pyrites, Robert W. Leeson
Bachelors Theses and Reports, 1928 - 1970
The purpose of this thesis is to record and discuss the results of tests conducted, at the Montana School of Mines, in which pyrite concentrates from the Concentrator Department of the Anaconda Reduction Works, Anaconda, Montana, were subjected to the reducing effects of natural gas at elevated temperatures in an endeavor to produce iron in the metallic form.
A Microscopic Study Of The Ore Minerals From The Mines In The Northern Part Of The Zosell (Emery) Mining District, John P. Joyce
A Microscopic Study Of The Ore Minerals From The Mines In The Northern Part Of The Zosell (Emery) Mining District, John P. Joyce
Bachelors Theses and Reports, 1928 - 1970
Any investigation of the many gold silver producing districts of Montana will necessarily include the name Zosell. The Zosell Mining District, often referred to as the Emery District, was never a major producer in the state; however, its location, history, type of deposit, and character of ore, has drawn the interest of many prominent investigators of the mineral industry.
Faunal Studies Of The Sappington Sandstone Of Southwestern Montana, Howard E. Banta
Faunal Studies Of The Sappington Sandstone Of Southwestern Montana, Howard E. Banta
Bachelors Theses and Reports, 1928 - 1970
The exact upper boundary of the Devonian of Montana has long been a controversy, as is true of the Devonian-Mississippian contact in many other localities. In an effort to delimit the upper Devonian, various paleontologic studies have been made, more especially in the southwestern part of the state.
Geology Of A Postulated Volcanic Vent Northeast Of Whitehall, Montana, C. H. Hewitt, H. D. Olson
Geology Of A Postulated Volcanic Vent Northeast Of Whitehall, Montana, C. H. Hewitt, H. D. Olson
Bachelors Theses and Reports, 1928 - 1970
The possibility of defining the roots of one of the volcanic sources of the Upper Cretaceous Livingston formation led to the detailed mapping upon an enlarged aerial photograph of a complexly intruded, folded, and faulted area about 10 miles northeast of Whitehall, Montana.
A Listing Of Montana Invertebrate Fossils And A Bibliography Of Montana Paleontology, Robert G. Ingersoll
A Listing Of Montana Invertebrate Fossils And A Bibliography Of Montana Paleontology, Robert G. Ingersoll
Bachelors Theses and Reports, 1928 - 1970
The oldest system in which identifiable invertebrate fossils have been found is the Cambrian. The basal Cambrian formation found in Montana is the Flathead sandstone and quartzite of Middle Cambrian age. No fossils have been reported from this formation. Above the Flathead is the Wolsey formation composed of green fissile shale with sandy and limy members. This fossiliferous member of the Middle Cambrian is known in Northwestern Montana as Gordon, and in the Philipsburg quadrangle as the Silver Hill formation.
Mineralogy Of The Silver King Mine Of Park City, Utah, Pierce D. Parker
Mineralogy Of The Silver King Mine Of Park City, Utah, Pierce D. Parker
Bachelors Theses and Reports, 1928 - 1970
Except for the early work of Boutwell and Irving, little has been published on the geology of the Park City mining district. For this reason and because of the availability of a selected suite of ores from the Silver King mine of this area, this writer chose the mineralogy of the Silver King mine as a senior thesis for the department of Geology of the Montana School of Mines.
The Construction Of A Ferromagnetic Torsion Balance, Elliott Willner
The Construction Of A Ferromagnetic Torsion Balance, Elliott Willner
Bachelors Theses and Reports, 1928 - 1970
The construction of the apparatus was performed entirely in the machine shops at the Montana School of Mines. The materials utilized in the construction were obtained through the courtesy of many sources: the A. C. M. Co., the Montana Power Co., and the Western Iron Works.
The Freezing Point Of Water In Puddled And Unpuddled Soils At Different Soil Moisture Tension Values, Robert B. Campbell
The Freezing Point Of Water In Puddled And Unpuddled Soils At Different Soil Moisture Tension Values, Robert B. Campbell
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
A technique that will adequately describe the physical condition of water in the soil has long been desired by scientists. The method should include the effect of soluble materials on the osmotic pressure of the soil solution, and also the effect of surface force action between the soil and soil water.
Parker (8) demonstrated that the freezing point was reduced in the presence of finely divided material. This suggested the possibility of using the cryoscopic procedure to measure the physical condition of water soil. More recently, the introduction of Thermistors for accurate temperature measurement have made it desirable to investigate …
Possible Mineral Resources University Land Grant, Montana School Of Mines Lands, Eugene S. Perry
Possible Mineral Resources University Land Grant, Montana School Of Mines Lands, Eugene S. Perry
Bachelors Theses and Reports, 1928 - 1970
The following evaluation of the mineral resources of the University Land-Grant lands has been made from an office study of geologic maps and published reports, and from a rather thorough knowledge of the geology of the state by the writer after 23 years of experience in the state.
Possible Mineral Resources University Land Grant, Montana State University Lands, Eugene S. Perry
Possible Mineral Resources University Land Grant, Montana State University Lands, Eugene S. Perry
Bachelors Theses and Reports, 1928 - 1970
The following evaluation of the mineral resources of the University Land-Grant lands has been made from an office study of geologic maps and published reports, and from a rather thorough knowledge of the geology of the state by the writer after 23 years of experience in the state.
Possible Mineral Resources University Land Grant, Montana State College Lands, Eugene S. Perry
Possible Mineral Resources University Land Grant, Montana State College Lands, Eugene S. Perry
Bachelors Theses and Reports, 1928 - 1970
The following evaluation of the mineral resources of the University Land-Grant lands has been made from an office study of geologic maps and published reports, and from a rather thorough knowledge of the geology of the state by the writer after 23 years of experience in the state.
Possible Mineral Resources University Land Grant, Western Montana College Of Education, Eugene S. Perry
Possible Mineral Resources University Land Grant, Western Montana College Of Education, Eugene S. Perry
Bachelors Theses and Reports, 1928 - 1970
The following evaluation of the mineral resources of the University Land-Grant lands has been made from an office study of geologic maps and published reports, and from a rather thorough knowledge of the geology of the state by the writer after 23 years of experience in the state.
Studies Of Antimony Occurrence With Special Relation To Its Effective Extraction, San Jose Antimony Mines, Wadley, San Luis Potosi, Mexico, J. C. Archibald Jr.
Studies Of Antimony Occurrence With Special Relation To Its Effective Extraction, San Jose Antimony Mines, Wadley, San Luis Potosi, Mexico, J. C. Archibald Jr.
Bachelors Theses and Reports, 1928 - 1970
The mines at San Jose which are within the Wadley unit are the largest antimony mines in Mexico. These mines produce more than half of the antimony produced by the company from its mining operations. Since the time of the author's connection with the company, a number of changes have been made in planning of development work, handling of labor, methods of mine development, cost improvement, and other problems inherent in the successful guidance of an operation.
A Stratigraphic Study Of Fusulinid Foraminifera In The Cherokee Group (Pennsylvanian) Of Western Missouri And Kansas, Ralph Orlansky
A Stratigraphic Study Of Fusulinid Foraminifera In The Cherokee Group (Pennsylvanian) Of Western Missouri And Kansas, Ralph Orlansky
Masters Theses
"Limestones or shaly limestones, from four stratigraphic levels in the Cherokee group (Desmoinesian series) of Missouri and Kansas, contain eight species and two varieties of fusulinid foraminifera, of which four species and two varieties are new, and one ophthalmidiid foraminiferal species (Hemigordius cf. regularis Plummer). The next to highest limestone (cap rock of the Fleming coal) is correlated with the Seahorne limestone of western Illinois, the Stonefort limestone of southern Illinois, and the Munterville limestone of Iowa. Hemigordius regularis, a limestone facies foraminifer apparently marks a correlatable interval in the Ardmore limestone. Descriptions of the fusulinids and the …
Geology And Mineralization Of The Jefferson Mine, Hardin County, Illinois, Robert Joe Cronk
Geology And Mineralization Of The Jefferson Mine, Hardin County, Illinois, Robert Joe Cronk
Masters Theses
"Purpose of the Investigation: The geology of the Jefferson Mine was mapped to determine the relationship of the two fluorspar veins exposed on the 260-foot level to the single vein on the 200-foot level to study the mineralogy and paragenesis of the ore, and to gain any other information that would lead to a better understanding of the fluorspar deposits"--Introduction, page 1.
Glacial Geology Of Wabash County, Indiana, William J. Wayne, William D. Thornbury
Glacial Geology Of Wabash County, Indiana, William J. Wayne, William D. Thornbury
Department of Earth and Atmospheric Sciences: Faculty Publications
Most of the topographic features of Wabash County are of glacial origin or are glacial deposits eroded by postglacial streams. Shales, limestones, and dolomites, all Silurian, are exposed only along some of the deeper valleys. Four major rivers and six smaller streams in Wabash County flow in glacial sluiceways. Only the Eel and Wabash sluiceways carried large quantities of melt-water. The Eel River valley train occupies an interlobate position, and the Wabash Valley bears evidence of its roles as a sluiceway and as an outlet for glacial Lake Maumee in late Cary time. Three topographic areas comprise the upland part …
Geology Of Ouachita Parish, Louisiana., Kia Kang Wang
Geology Of Ouachita Parish, Louisiana., Kia Kang Wang
LSU Historical Dissertations and Theses
No abstract provided.
Recent Foraminiferal Faunules From The Louisiana Gulf Coast., Harold Veral Andersen
Recent Foraminiferal Faunules From The Louisiana Gulf Coast., Harold Veral Andersen
LSU Historical Dissertations and Theses
No abstract provided.
Mudlumps At The Mouths Of The Mississippi River., James P. Morgan
Mudlumps At The Mouths Of The Mississippi River., James P. Morgan
LSU Historical Dissertations and Theses
No abstract provided.