Physical Sciences and Mathematics Commons^™

A Mineral Dressing Study Of The U.S. Grant Ore, John Emmett Murphy

Bachelors Theses and Reports, 1928 - 1970

This investigation concerns the development of a satis­factory method or extracting or concentrating gold and silver from the ores of the U. S. Grant Mine. The choice between applying an extractive process and one by which the valuable mineral constituents are concentrated depends on more than one factor.

Karst Kamp Asbestos Deposits Gallatin County, Montana, Thomas L. Wilson

Bachelors Theses and Reports, 1928 - 1970

Karst Kamp, a southwestern Montana recreation re­sort, is 32 road miles south of Bozeman on the east bank of the Gallatin River in a narrow V-shaped valley flanked on the west by the rugged Madison mountain range and on the east by the equally rough Gallatin range. The asbestos deposit itself lies approximate­ly one-half mile northwest of the ranch on a heavily timbered "Al­pine-like" slope nearly 1200 feet above the floor of the valley.

Geology And Ore Deposits Of The Salt Chuck-Rush And Brown Mine Area Prince Of Wales Island, Alaska, Judson H. Whitman

Bachelors Theses and Reports, 1928 - 1970

The Salt Chuck, Rush and Brown, and adjacent mines and claims form an area of approximately 15 square miles near the head of Kasaan Bay about 10 miles northwest of the village of Kasaan on Prince of Wales Island in southeastern Alaska. It is an area of moderate relief in which the hills rise from the water’s edge to heights of some 500 feet. Most of the area is covered with dense vegetation and muskeg.

A Discussion Of The Geology And An Isopach Map Of The Pennsylvanian System In Wyoming And Adjacent Areas, B. R. Alto

Bachelors Theses and Reports, 1928 - 1970

Pennsylvanian strata in Wyoming and adjacent areas have been the subject of much work and discussion. Most of the work has been due to the economic importance of the system as an oil producer in this region. Oil production from strata of Pennsylvanian age is rather recent history; and therefore, much of the available information is local­ized and incomplete.

Sandstones Of The Lance And Fort Union Formations, Alan G. Conner

Bachelors Theses and Reports, 1928 - 1970

The Fort Union and Lance formations are widespread terrestrial sediments exposed in Montana, North Dakota, South Dakota, Wyoming, and Canada. Their stratigraphic position, especially that of the Lance, has long been in doubt, and has provoked much controversy among geologists.

Flotation Concentration Of A Montana Lead-Zinc-Silver-Ore, Grover W. Gregson

Bachelors Theses and Reports, 1928 - 1970

The Mike Horse mine, in the Huddelston mining district, is fifty-two miles northwest of Helena, Montana. The mine was discovered in 1898 by Joseph Heitmiller. There was only minor production from the date of discovery until 1915; the main drawback being lack of good road.

The Geology And Mineral Deposits Of British Columbia, John A. Downing

Bachelors Theses and Reports, 1928 - 1970

The province of British Columbia, with an area of 359,279 square miles, includes a large part of the Canadian Cordillera that is the western mountains of Canada. It is the leading province of Canada in the production of lead, zinc, and silver, and third among the provinces in the output of gold, copper, and coal.

The Continuous Electrodeposition Of Manganese, Joseph W. Joyce

Bachelors Theses and Reports, 1928 - 1970

The object of this research was to produce a workable electrolytic cell for the continuous deposition of manganese from aqueous sulphate solutions and determine the critical factors in its oper­ation.

The Physiographic History Of Western Montana And Northwestern Idaho, John R. Kavanagh

Bachelors Theses and Reports, 1928 - 1970

Millions of years of physiographic changes have conditioned us to the fact that our present drainage is a temporary feature. Rivers once flowing opposite to their present direction is not an unusual condition for physiographers to suggest.

An Isopach Map And A Discussion Of The Permian In Wyoming And Adjacent Areas, Willard Leskela

Bachelors Theses and Reports, 1928 - 1970

The accelerated post-war demand for petroleum products with resultant high prices and dwindling reserves has spurred producers to an extensive search for new fields and for ad­ditional production in known fields. Exploration and discov­ery is dependent on the collection and correlation of vast amounts of data both in the field and that found in liter­ature.

Roasting And Leaching Of Montana Chromite, Jerry D. Murphy

Bachelors Theses and Reports, 1928 - 1970

The United States, although the leading consumer of chromite, depends almost entirely on imports for its supply. Domestic production of chromite is limited, because high-grade imported ore is plentiful and inexpensive in normal times. There are several large deposits of chromite in the United States, representing millions of tons of low grade ore. These deposits form a strategic reserve that must be used in time of national emergency.

Sulfatizing Roasting Of A Copper Sulfide Ore, Walter D. Finnegan

Bachelors Theses and Reports, 1928 - 1970

At present copper sulfide ores are recovered by pyrometallurgical processes. While the recovery of cop­per from sulfide ores by hydrometallurgical means has long been considered attractive, the impurities, low re­covery and mechanical difficulties have kept this process from becoming commercial.

Geology Of The Lost Creek-Modesty Creek Area Deerlodge County, Montana, Howard B. Nickelson, Robert L. Pott

Bachelors Theses and Reports, 1928 - 1970

In 1915 the United States Geological Survey published a folio by Calkins and Emmons on the geology of the Philipsburg Quadrangle, which ad­joins the area now under study to the west. Geology of this portion of Montana had not been mapped previously; consequently the purpose of this thesis is to make a geological reconnais­sance of the stratigraphy and structure of the area.

A Study Of The Action Of Various Energizers In The Carburization Of Steel, William N. Warren

Bachelors Theses and Reports, 1928 - 1970

The object of casehardening is to produce articles of steel having a tough or ductile interior and a hard sur­face. Quenching produces a surface somewhat harder than the interior, but in order to obtain a high surface hard­ness, the percentage of alloying elements in the steel must be raised to such an extent that the core or central por­tion becomes hard and brittle also.

Geology Of Montana, Stanley G. Olson

Bachelors Theses and Reports, 1928 - 1970

A vast amount of information has been published by many workers on particular features of the geology of the state of Montana, as well as on local geology of many smaller divi­sions. However, a satisfactory summary of the geology in general, which would include all phases of geology as they apply to the greater area of the entire state, has not been published.

A Study Of The Diffusion Of Electroplated Coatings In The Solid State., Michael R. Writt

Bachelors Theses and Reports, 1928 - 1970

The term diffusion means an equalization or homogenization of diverse materials. Specifically ap­plied to metals, diffusion is the interchange of atoms. It is, in effect, an invasion of one crystal lattice by the atoms of one or more other crystal lattices. Therefore, the study of diffusion must involve the geometry and physics of crystal lattices as well as their energies.

Leaching Of Low Grade Rhodochrosite, E. D. King

Bachelors Theses and Reports, 1928 - 1970

Although there are many uses for manganese today, none of them approaches its importance as a deoxidizing agent in the manufac­ture of steels. Without manganese the steelmaking in­dustry would be very seriously handicapped. The metal­lurgy of manganese has been developed around the high-grade ores, and unfortunately, our reserves of high-grade ores are very limited.

Ground-Water Levels In The Lower Platte River Valley, Nebraska, H. A. Waite

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

The Monadnock Volume 22, Number 2, May 1948, Clark University Geographical Society

The Monadnock (Clark Geographical Society)

Volume 22, Issue 2 of The Monadnock. The Monadnock was the alumni magazine of the Clark University Geographical Society (1927-1985) (2014-present).

An Investigation Of Several Electrode Combinations In An Effort To Find A Suitable Combination For The Potentiometric Titration Of Fluorides Using Cerous Nitrate As The Titrating Reagent, Miriam Knoebel

Bachelors’ Theses

The increasing commercial and industrial interest in compounds of fluorine as important industrial materials, and the importance of the relation of fluorides in water and foods to human health, has necessitated an accurate and rapid method for the quantitative determination of fluorides.

Conductance Of Organic Nitrogen Compounds At Their Melting Points, Leonard Joseph Burant

Bachelors’ Theses

Even though there are many practical applications using the conductance of fused salts, such as the commercial preparation of aluminum, sodium, potassium, calcium, and magnesium, there is very little in the literature on such conductance.

Because organic compounds as a class do not conduct as well as acids, bases, and salts, even less attention has been paid to the conductance of organic compounds in the fused state. Since the author has had some experience with organic preparations, it seemed worth while to prepare certain types of related heterocyclic organic compounds and to test their conductance in the fused state.

The Identification Of Alkyl Halides Through Conversion To Alkyl 3, 5 Dinitrobenzoates By A Reaction Between The Alkyl Halide And A Metallic Salt Of The Acid, James L. Finnerty

Bachelors’ Theses

To materially aid in the identification of a series of organic compounds one must develop a new system of derivatives or suggest better methods for preparing known derivatives. The problem of characterizing alkyl halides is one in which there is room for improvement, for the best derivatives of these compounds are now prepared by means of the Grignard reaction which may often fail to give satisfactory results. Moreover, there is a series of solid alkyl esters, the 3, 5 dinitrobenzoates, which serve very well for the identification of aliphatic alcohols, and which should be applied to the alkyl halides if …

A Study Of Chromatographic Adsorption Analysis And Its Application To Inorganic Qualitative Analysis, Sidney Marion Beck

Theses and Dissertations

This work is a study of the analytical applications of the chromatographic method, particularly as applied to inorganic qualitative analysis. It is divided into four parts as follows: (a) The main part of the work is a search of the common laboratory reagents, likely to be found in any beginning qualitative analysis laboratory, with the purpose of finding the best reagents for developing an invisible chromatogram on an adsoption column of activated alumina. For the most part, only inorganic reagents were used, but in special cases, a few of the more common orgaic reagents were used. (b) An evaluation of …

The Effect Of Light, Soil Temperature, And Soil Moisture On High-Lime Chlorosis, Lauren M. Burtch

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Chlorosis of plants from a lack of available iron is one of the most common plant nutrient problems of the calcareous soils of the west. The disease is characterized by a yellowing of the plant leaves and is accompanied, in severe cases, by a partial root death and premature defoliation (3). In addition to reducing growth, the disease greatly reduces the quality and yield of plants.

Many types of plants are affected by iron chlorosis. In Hawaii and Porto Rico rice, sugar cane and pineapple are susceptible, while in California and Arizona, citrus trees are seriously affected. In Utah apples, …

Solubility And Physiological Availability Of Phosphates In Sodium And Calcium Systems, Parker F. Pratt

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

One of the principal fertility problems of calcareous soils is the lack of available phosphates. The factors which control this availability are not completely understood. One hindrance to the solution of the problems involved results from confusion of the concepts of solubility and availability. Availability is the net effect of the chemical state of a plant nutrient element and the ability of the plant to utilize the forms of the element present under the existing chemical and physical environmental conditions. In this paper, the term solubility will be used to designate the chemical solubility of an element in water or …

The Electrodeposition Of Iron-Manganese Alloys, Kenneth H. Larson

Bachelors Theses and Reports, 1928 - 1970

Although the alteration of properties resulting from the alloying of metals in their usual commercial forms has been extensively investigated, the field of electrodeposition of alloys is believed generally not to have received the atten­tion that it merits.

A Study Of The Physical Properties Of Low Tin Solders, Cornelius P. Dwyer

Bachelors Theses and Reports, 1928 - 1970

In 1947, out of the 100,000 long tons of tin con­sumed in the United States, 25,000 tons went into solder. Tin plate took 39,000 tons while babbit, bronze and coll­apsible tubes accounted for approximately 17,000 tons. Solder ranked second to tin plate and required more than the next three major uses combined.

The Effect Of Manganese And Magnesium On The Hardening Of Copper-Aluminum Alloys, Robert M. Hansen

Bachelors Theses and Reports, 1928 - 1970

During recent years, duralumin and all aluminum alloys have been made the object of much discussion regarding their hardening mechanism. The commercial success of nearly all of the alloys of aluminum and mag­nesium is dependent on their ability to age or precipitation harden.

An Investigation Of Age-Hardening In A Commercial Copper-Beryllium Alloy, Terry Horne

Bachelors Theses and Reports, 1928 - 1970

This investigation is concerned with the age-hardening process as exemplified by the aging of a commercial Cu-Be alloy and, in particular, with this pro­cess as determined by X-ray methods. The amount of infor­mation available on age-hardening of commercial alloys is scanty and what information there is, is inaccurate.

An Investigation Of The Anodic Oxidation Of Aluminum In A Sulfuric Acid Electrolyte, William D. Michaely

Bachelors Theses and Reports, 1928 - 1970

When aluminum is allowed to stand in air or is heated in air, a thin oxide film is produced on the metal. If aluminum is made the anode in a suitable electrolyte and a current applied, a coating is obtained which is similar to that produced in air, but may be effected much quicker. This film is thicker, harder, more resistant to corrosion and abrasion, and more adhesive than the natural oxide. The film is porous and makes an excellent adsorptive for dyes and pigments.