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Articles 29281 - 29310 of 29714
Full-Text Articles in Physical Sciences and Mathematics
The Investigation Of Different Variables In The Assaying Of Silver Cyanide Solution, Warren M. Mahan
The Investigation Of Different Variables In The Assaying Of Silver Cyanide Solution, Warren M. Mahan
Bachelors Theses and Reports, 1928 - 1970
The assaying of gold and silver cyanide solutions is by no means new. The first method of analysis which is given in the literature is an evaporation method by S. B. Christy in 1896. However, the fire assaying of gold and silver dates further back than this. There is a method of fire assaying for gold and silver given in literature as early as 1556 in Georgius, Agricola’s De Re Metallica book.
Areal Geology Of The Post-Paleozoic Surface Of The Northwest Plains, William M. Broderick
Areal Geology Of The Post-Paleozoic Surface Of The Northwest Plains, William M. Broderick
Bachelors Theses and Reports, 1928 - 1970
Probably most of the area included in this report has been examined to some extent by oil geologists, and most, if not all, of the important domes have been discovered and surveyed thoroughly. In parts of the area, the bedrock is covered by glacial drift or alluvium material, but it is reasonable to believe that no new domal structure will be found. This means that surface examination alone will be insufficient in locating new oil fields, so future prospecting will be dependent, to a great extent, on studies of sub-surface stratigraphy.
Geology And Ore Deposits Of The Jardine Mining District, Park County, Montana, Douglas M. Dowell
Geology And Ore Deposits Of The Jardine Mining District, Park County, Montana, Douglas M. Dowell
Bachelors Theses and Reports, 1928 - 1970
The Jardine Mining district is in the extreme southern part of Park County, Montana. Jardine is five and one-half miles northeast of Gardiner, Montana, the northern entrance to Yellowstone National Park.
Electrolysis Of Molten Mixtures Of Galena And Lead Chloride., Donald Q. Cole
Electrolysis Of Molten Mixtures Of Galena And Lead Chloride., Donald Q. Cole
Bachelors Theses and Reports, 1928 - 1970
Electrolysis of molten mixtures of lead chloride and galena was carried out under various conditions of temperature, time, composition, and current densities; without a diaphram, and with various diaphrams. Continuous runs, with necessary additions of lead sulfide and lead chloride to maintain a melt of the proper composition, were attempted on a small scale.
A Study Of The Effect Of Third Metals On The Wetting Properties Of Solders, William L. O'Brien
A Study Of The Effect Of Third Metals On The Wetting Properties Of Solders, William L. O'Brien
Bachelors Theses and Reports, 1928 - 1970
Solders are not new alloys, since they were known in late Roman times when they were mentioned by Pliny. These solders differed very little from our modern ones. Tertiarium, consisting of one part of tin to two parts of lead, is known today as plumbers solder; and argentarium, consisting of equal parts of lend and tin, is still extensively used for many purposes.
The Testing And Concentration Of A Tungsten Ore, Turdat S. Simone
The Testing And Concentration Of A Tungsten Ore, Turdat S. Simone
Bachelors Theses and Reports, 1928 - 1970
At the present time the principal uses for tungsten lie in the manufacture of ferro-alloys and tungsten steels. Due to it’s hardening and strengthening characteristics it holds an important position among steel hardening metals. The great rush for it’s production during the World War years clearly points to it’s importance in the manufacture of armament.
A Study Of Metallic Eutectics, Robert P. Corbett
A Study Of Metallic Eutectics, Robert P. Corbett
Bachelors Theses and Reports, 1928 - 1970
All of the metals have definite melting points. When a metal is heated above the melting point, it exists as a liquid. Now if the melt is allowed to cool, it will solidify when a temperature corresponding to the melting point is reached.
However, if one metal is added to another metal, both of which are mutually soluble in the liquid state, a certain effect can be noted. The melt will not solidify when the melting point of the pure metal is reached, but will freeze at a lower temperature.
A Study Of The Concentration Of A Copper-Zinc Ore., Kenneth L. M. Dodd
A Study Of The Concentration Of A Copper-Zinc Ore., Kenneth L. M. Dodd
Bachelors Theses and Reports, 1928 - 1970
The ore under investigation in this thesis is a copper-zinc ore which came from the state of New Mexico. The exact location is unobtainable. The purpose of the investigation was to determine the most effective means of concentration of the valuable minerals present in the ore.
The Testing And Concentration Of A Low Grade Copper-Nickel Ore., Laurence T. Eck
The Testing And Concentration Of A Low Grade Copper-Nickel Ore., Laurence T. Eck
Bachelors Theses and Reports, 1928 - 1970
The purpose of this thesis is to investigate the possibility of concentrating a low grade copper-nickel ore, to determine the most effective method of concentration, and to attempt to draw some conclusions to determine whether or not the concentrates produced would be of sufficient high grade to make the recovery of nickel and copper a profitable enterprise.
The Electrolytic Recovery Of Copper And Zinc From Scrap Brass With Special Reference To Lead-Bearing Brass., Frederick A. Hames
The Electrolytic Recovery Of Copper And Zinc From Scrap Brass With Special Reference To Lead-Bearing Brass., Frederick A. Hames
Bachelors Theses and Reports, 1928 - 1970
Several methods have been investigated, with some success, for treating scrap brass to recover copper and zinc, either as pure metals or as salts of the metals. One of the more promising of these methods is electrolysis in sulfate solution for the recovery of pure copper and zinc.
The Geology And Mineralogy Of The Independence Mining District, Alan Kuhlman
The Geology And Mineralogy Of The Independence Mining District, Alan Kuhlman
Bachelors Theses and Reports, 1928 - 1970
From 1888 until 1893 the district was a booming mining camp. Seven stamp mills were running and ore was being mined from the Independence, King Solomon, Poorman, Golden, Hidden Treasure and Crown claims. The town of Independence, which was on the Boulder River at the fork of Basin Creek, boasted a population of 400 people.
Geology And Ore Deposits Of The Clinton Mining District, James F. Piquette
Geology And Ore Deposits Of The Clinton Mining District, James F. Piquette
Bachelors Theses and Reports, 1928 - 1970
This report includes the results of geological investigation of the Clinton Mining District and the Hidden Treasure Mine.The Clinton Mining District is an unorganized mining district situated in the Garnet Range two and one-half miles northeast of the town of Clinton, Montana, which is on the Northern Pacific Railway and the Chicago, Milwaukee, St. Paul, and Pacific Railroad seventeen miles east of the city of Missoula.
The district is in the same range of mountains as the Garnet Mining District and the drainage from the district covered is to the south into the Hell Gate or Clarks Fork of …
The Measurement Of Current Efficiency In Zinc Sulphate Electrolytes Containing Antimony And Cobalt By Hydrogen Evolution, Arthur R. Hard
The Measurement Of Current Efficiency In Zinc Sulphate Electrolytes Containing Antimony And Cobalt By Hydrogen Evolution, Arthur R. Hard
Bachelors Theses and Reports, 1928 - 1970
The measurement of current efficiency by hydrogen evolution is based on the assumption that the portion of the current which deposits no zinc will release hydrogen. This assumption is correct for solutions containing no impurities electropositive to zinc.
The Age-Hardening Of Magnesium With Aluminum And Zinc, K. Deatley Loughridge
The Age-Hardening Of Magnesium With Aluminum And Zinc, K. Deatley Loughridge
Bachelors Theses and Reports, 1928 - 1970
Magnesium is one of the most active elements and forms oxides, nitrides, and carbides, but not hydrides. Due to its activity, low melting point, low strength when unalloyed, and the difficulty with which it is worked, magnesium has not been and is not at present well developed.
A Study Of Eutectics Of Certain Fused Salts, William D. Trethewey
A Study Of Eutectics Of Certain Fused Salts, William D. Trethewey
Bachelors Theses and Reports, 1928 - 1970
Considerable work has been done investigating the freezing point curves of fused salts, but little has been written describing the appearance of their eutectic structures when observed under the microscope.
Historical Background And Settlement Of Baxter Springs, Kansas, Ruth Rodman St. Clair
Historical Background And Settlement Of Baxter Springs, Kansas, Ruth Rodman St. Clair
Electronic Theses & Dissertations
This is a study of the historical background and the settlement of Baxter Springs, which is located in the southeastern corner of Kansas, one mile from the Oklahoma line and six miles from the Missouri line. It was one of the first settlements in Cherokee County and the first frontier town near the southern boundary line of Kansas.
The town was named tor John L. Baxter who settled upon the present town site in 1849.
During the civil war, a military post for the Union Army was maintained at Baxter Springs. The principal engagement of the war, in this section …
Report On The Ermont Mine Sec. 35, T. 6 S., R. 11 W., Beaverhead County, Montana, Chester Harkins Steele
Report On The Ermont Mine Sec. 35, T. 6 S., R. 11 W., Beaverhead County, Montana, Chester Harkins Steele
Bachelors Theses and Reports, 1928 - 1970
An examination of the Ermont Mine was requested by the owners, Messrs. J. R. Bowles and R. B. Caswell, to determine the amount and grade of ore developed, the advisability of constructing a mill at the present time, and to recommend future development work.
Report On Pole Canyon Area And Area Three Miles Southeast Of Jefferson Island, Ted Newcombe
Report On Pole Canyon Area And Area Three Miles Southeast Of Jefferson Island, Ted Newcombe
Bachelors Theses and Reports, 1928 - 1970
The primary purpose of the trip was to acquaint the students with some of the problems that occur in the field, and also how to make geologic maps of sections, outcrops, faults, and other geologic features of the earths surface.
The Geology Of The Limespur-Sappington Area, Frank W. Archibald
The Geology Of The Limespur-Sappington Area, Frank W. Archibald
Bachelors Theses and Reports, 1928 - 1970
The area to be surveyed was divided up into sections add each crew of three or four members was assigned one of these sections. The first two days were spent in studying and mapping the geologic section in the South Boulder Canyon where we obtained practice in alidade surveying, brunton, pacing, and auto traverse.
Ankara'nin Dört Kaplicasi, W.Salomon Calvi̇
Ankara'nin Dört Kaplicasi, W.Salomon Calvi̇
Bulletin of the Mineral Research and Exploration
No abstract provided.
İçel Vi̇layeti̇ Namrun Mintakasi Dahi̇li̇ndeki̇ Toros'un Jeoloji̇si̇ne Umumi̇ Bakiş Ve Bu Havali̇de Bulunan Boksi̇t Zuhuru, Maurice M. Blumenthal
İçel Vi̇layeti̇ Namrun Mintakasi Dahi̇li̇ndeki̇ Toros'un Jeoloji̇si̇ne Umumi̇ Bakiş Ve Bu Havali̇de Bulunan Boksi̇t Zuhuru, Maurice M. Blumenthal
Bulletin of the Mineral Research and Exploration
No abstract provided.
Si̇i̇rt Garbinda Başor Çayi Mintakasinda Bi̇tli̇s Daklarinin Cenubi̇ Si̇lsi̇leleri̇ni̇n Jeoloji̇k Müşahedeleri̇, P. Arni̇
Bulletin of the Mineral Research and Exploration
No abstract provided.
Konya Mintakasindaki̇ Karst Badi̇seleri̇ Ve Bunlarin Zi̇raat Bakimindan Ehemmi̇yeti̇, E. Lahn
Konya Mintakasindaki̇ Karst Badi̇seleri̇ Ve Bunlarin Zi̇raat Bakimindan Ehemmi̇yeti̇, E. Lahn
Bulletin of the Mineral Research and Exploration
No abstract provided.
Ankara Ci̇varinda Jeoloji̇k Gezi̇ler, W.Salomon Calvi̇
Ankara Ci̇varinda Jeoloji̇k Gezi̇ler, W.Salomon Calvi̇
Bulletin of the Mineral Research and Exploration
No abstract provided.
Merkezi̇ Anadolu Ovalarinin Jeoloji̇k Ve Hi̇droloji̇k Müşahedeleri̇ Hakkindaki̇ Almanca Makaleni̇n Hülasasi, W.Salomon Calvi̇, H. Klei̇nsorge
Merkezi̇ Anadolu Ovalarinin Jeoloji̇k Ve Hi̇droloji̇k Müşahedeleri̇ Hakkindaki̇ Almanca Makaleni̇n Hülasasi, W.Salomon Calvi̇, H. Klei̇nsorge
Bulletin of the Mineral Research and Exploration
No abstract provided.
Erzurum Havali̇si̇ni̇n Jeoloji̇k Bünyeleri̇, E. Lahn
Erzurum Havali̇si̇ni̇n Jeoloji̇k Bünyeleri̇, E. Lahn
Bulletin of the Mineral Research and Exploration
No abstract provided.
Geologi̇sche Und Hydrologi̇sche Beobachtungen Über Zentral Anatoli̇sche Ova, W.Salomon Calvi̇, H. Klei̇nsorge
Geologi̇sche Und Hydrologi̇sche Beobachtungen Über Zentral Anatoli̇sche Ova, W.Salomon Calvi̇, H. Klei̇nsorge
Bulletin of the Mineral Research and Exploration
No abstract provided.
M.T.A. Ensti̇tüsünün Beş Yillik Tekni̇k Bi̇lançosu, - -
M.T.A. Ensti̇tüsünün Beş Yillik Tekni̇k Bi̇lançosu, - -
Bulletin of the Mineral Research and Exploration
No abstract provided.
The Quantitve Measurement Of Amalgamation, Robert A. Mcguire
The Quantitve Measurement Of Amalgamation, Robert A. Mcguire
Bachelors Theses and Reports, 1928 - 1970
Mercury has been known since ancient times. In fact, one mine, the "Almaden" in Spain, has been worked continuously since Roman times. It has been used during all this time for the recovery of free gold from gold concentrates, and from black sand and galena in concentrates from placer work.
Fauna Of The Three Forks Formation In Montana, Will Mitchel Jr.
Fauna Of The Three Forks Formation In Montana, Will Mitchel Jr.
Bachelors Theses and Reports, 1928 - 1970
The purpose of this paper is to identify and describe the fauna, correlate it with that of the Upper Devonian of other states, to note the geographic distribution, lithologic variations of outcrops, and to compare measured cross sections.