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Articles 241 - 270 of 516
Full-Text Articles in Other Engineering
An Investigation Of The Precipitation Of Cobalt With Zinc Dust, Lyle Hallberg
An Investigation Of The Precipitation Of Cobalt With Zinc Dust, Lyle Hallberg
Bachelors Theses and Reports, 1928 - 1970
Cobalt, as well as copper, cadmium, and other impurities, is removed by selective precipitation with zinc during the zinc electrolyte purification cycle, and the purification residue may be treated by a Cadmium Plant for the recovery of cadmium.
Construction And Operation Of A Laboaratory Size Thum Cell, Raymond Dugdale
Construction And Operation Of A Laboaratory Size Thum Cell, Raymond Dugdale
Bachelors Theses and Reports, 1928 - 1970
Electrolytic silver refining was not perfected until the end of the nineteenth century. During the process of development, two systems of silver refining have come into prominence: the Moebius and the Thum types.
An Investigation Of Silicon Impregnation Of Low-Carbon Steels, Thomas E. Groce
An Investigation Of Silicon Impregnation Of Low-Carbon Steels, Thomas E. Groce
Bachelors Theses and Reports, 1928 - 1970
A problem of metallurgy during the last part of the Nineteenth and the early Twentieth Century, and one that stood very near the front, was investigations of methods to produce a non-corrosive surface on iron and steel without affecting the physical properties of these base metals.
A Study Of The Transformation Of A Twenty-Eight Per Cent Tin Bronze, Perry A. Boukind
A Study Of The Transformation Of A Twenty-Eight Per Cent Tin Bronze, Perry A. Boukind
Bachelors Theses and Reports, 1928 - 1970
In this investigation, attention is directed to the phases covered by a 28 per cent tin alloy. When the investigation was started, consideration was given to the possibility of making a Time - Temperature - Transformation curve for this particular alloy. As the work progressed and further research was carried on, this phase of the work was abandoned.
Chromizing Of Steels, Edward Buchanan
Chromizing Of Steels, Edward Buchanan
Bachelors Theses and Reports, 1928 - 1970
In recent years, considerable thought and study have been given to the use of chromized articles in place of chromium stainless steel articles. The present extensive application of chromizing, indeed, helps greatly to conserve this valuable metal.
Caustic Leaching Of Montana Chromite, Chester Freshour
Caustic Leaching Of Montana Chromite, Chester Freshour
Bachelors Theses and Reports, 1928 - 1970
Chromite is the most important ore used for the production of chromium and chromium alloys. At present, the domestic production is insignificant as compared with the amount of chromite consumed in the United States.
An Investigation Into The Precipitation Of Copper From Mine Water, Using Sulfur Dioxide To Reduce The Ferric Ion Content, David S. Gleason
An Investigation Into The Precipitation Of Copper From Mine Water, Using Sulfur Dioxide To Reduce The Ferric Ion Content, David S. Gleason
Bachelors Theses and Reports, 1928 - 1970
The experiments which were preformed showed that sulfur dioxide would reduce the ferric ion content of the mine waters to a very low figure. The reduction in the ferric ion content would improve the efficiency of the precipitation process, and also increase the recovery of copper.
Application Of The Electric Furnace To The Melting Of Cathode Copper At The Tacoma Smelter, Alvin H. Nelson
Application Of The Electric Furnace To The Melting Of Cathode Copper At The Tacoma Smelter, Alvin H. Nelson
Bachelors Theses and Reports, 1928 - 1970
In the field of copper metallurgy, the major changes effected in the original metallurgical scheme have been based largely upon the lowering in grade of copper ores, and the more particular demands of the fabricators of the metal. The former trend fostered the development of mineral beneficiation, which in turn caused the conversion from blast furnace to reverberatory furnace smelting.
The Characteristics Of The Electrolyte In The Series System Of Electrolytic Copper Refining, Carl W. Howald Jr.
The Characteristics Of The Electrolyte In The Series System Of Electrolytic Copper Refining, Carl W. Howald Jr.
Bachelors Theses and Reports, 1928 - 1970
Almost everyone is familiar with the tremendous importance of copper in our everyday life. One of the properties of copper which determines its great usefulness to mankind is its electrical conductivity. This property alone has more to do with the prominence of copper among useful metals then does any other.
The Casting Of Anodes For The Series System Of Electrolytic Copper Refining, Robert R. Kupfer
The Casting Of Anodes For The Series System Of Electrolytic Copper Refining, Robert R. Kupfer
Bachelors Theses and Reports, 1928 - 1970
The electrolytic refining process, while usually considered an auxiliary process used in conjunction with pyrometallurgical extraction, deserves a special niche in the complex metallurgy of copper. The development of electrolytic copper refining, for example, is largely responsible for the prominence of the electrical industry. Conversely, it could be stated that the electrical industry played an important part in the development of the copper industry.
Aluminum - Bronze Compacts And Their Possible Use As A Bearing Material, Donald J. Mcmaster
Aluminum - Bronze Compacts And Their Possible Use As A Bearing Material, Donald J. Mcmaster
Bachelors Theses and Reports, 1928 - 1970
In the modern aspect of powder metallurgy, the first use of a sintering process was in making filaments for incandescent electric lamps.In the short while from the day of Edison to the present, the science of working with metal powders has advanced by leaps and bounds.
The Psilomelane Mineral Of The Butte District, Montana, Logan E. Davis
The Psilomelane Mineral Of The Butte District, Montana, Logan E. Davis
Bachelors Theses and Reports, 1928 - 1970
During the last few years a great deal of research has been done in connection with the black manganese oxide minerals. This is especially true of the so called mineral psilomelane. It has been proven without a doubt that the name psilomelane has been used in the past to include a great variety of similar black manganese oxide minerals. By the use of X-ray equipment these minerals have been definitely identified.
An Isopach Map And A Discussion Of The Cambrian Strata In The Central Cordilleran Area, Rudi Forhan
An Isopach Map And A Discussion Of The Cambrian Strata In The Central Cordilleran Area, Rudi Forhan
Bachelors Theses and Reports, 1928 - 1970
In the past few years intensive studies have been going on concerning Cambrian formations as a locale for orebodies. Many of the dolomites and limestones of southwestern Montana are susceptible to replacement by mineralizing solutions, especially when overlain by a rather impervious layer of shale, as is the Pilgrim limestone of Upper Cambrian time.
Operation Characteristics Of The Series System For Electrolytic Refining Of Copper, John T. O'Donnell
Operation Characteristics Of The Series System For Electrolytic Refining Of Copper, John T. O'Donnell
Bachelors Theses and Reports, 1928 - 1970
In the copper electrolytic refining operation, two main objectives are desired: the first is the production of a metal of desired chemical composition and physical characteristics, and the second is the recovery of the valuable by-products.
Daibase Sill Comanche County, Oklahoma, Jean A. Hardesty
Daibase Sill Comanche County, Oklahoma, Jean A. Hardesty
Bachelors Theses and Reports, 1928 - 1970
The mechanics of intrusion and the processes involved are becoming of more and more interest to contemporary geologists, because most of our mineral deposits are associated with igneous intrusions, and unknown-outcropping deposits are thought to be a thing of the past. If, by studying these processes, we could understand why some igneous masses are barren, while others of similar composition carry economic mineral deposits, geological prospecting for hidden mineral concentration would see a new era.
The Livingston Formation Of The South Boulder Area, Nelson A. Jones
The Livingston Formation Of The South Boulder Area, Nelson A. Jones
Bachelors Theses and Reports, 1928 - 1970
The Livingston formation is a thick succession of late Cretaceous lava flows, tuffs, and bedded water-laid volcanic detritus 200 miles long and 100 miles wide lying along the eastern margin of the Rocky Mountains in western Montana from Augusta to Yellowstone Park. It differs markedly within short distances in lithologic character and sequences, and the total thickness may exceed one mile in some places.
Comparative Studies Of Oklahoma And Missouri Granites With Special Attention To The Heavy Minerals Of The Oklahoma Granites, Russell B. Maurer
Comparative Studies Of Oklahoma And Missouri Granites With Special Attention To The Heavy Minerals Of The Oklahoma Granites, Russell B. Maurer
Bachelors Theses and Reports, 1928 - 1970
When examined petrographically the granites of Oklahoma show a marked similarity to the granites of Southeastern Missouri. The same heavy accessory mineral suites are present in the granites of both regions and include: fluorite, zircon, apatite, titanite and epidote. This similarity was further shown by the actual correlation of the heavy mineral suites by types, these types being, based on the heavy mineral distributions of the Missouri Granites.
Benefication Of An Oxidized Lead Ore From The Franklin Mine Lewis And Clark County, Jack D. Mclenegan
Benefication Of An Oxidized Lead Ore From The Franklin Mine Lewis And Clark County, Jack D. Mclenegan
Bachelors Theses and Reports, 1928 - 1970
This thesis is concerned with the beneficiation of an oxidized lead ore. Emphasis was placed upon concentration by flotation rather than by gravity methods, although some investigation was made with the Wilfley shaking table. The concentration of lead minerals received most consideration in the problem, but wherever possible attempts were made to increase the silver and gold concentration along with the lead.
An Isopach Map And Discussion Of Triassic Strata In Southern Montana And Wyoming, Robert G. Thompson
An Isopach Map And Discussion Of Triassic Strata In Southern Montana And Wyoming, Robert G. Thompson
Bachelors Theses and Reports, 1928 - 1970
Oil and gas have been found in the Triassic strata of Wyoming. Although the Triassic has not as yet proven to be a large producing horizon it is very probable that additional oil will be found in Triassic strata in the future, and it is one of the goals at which oil well drillers aim their tools.
Foraminifera From The Colorado Shale Of North-Central Montana, Higbee G. Williams, David P. Wilson
Foraminifera From The Colorado Shale Of North-Central Montana, Higbee G. Williams, David P. Wilson
Bachelors Theses and Reports, 1928 - 1970
The use of foraminifera in the determination of geologic age, and in the correlation of strata, is one of the most important techniques in oil field stratigraphic studies. The petroleum industry in many regions relies on these microscopic life forms to determine the positions of oil-bearing horizons and to determine the tops of beds. In northern Montana the Colorado group of strata, a series of about 2,000 feet of dense, dark similar shales, is known to contain foraminifers.
Geological Report Of Conrow Wood Creek Area 8 Miles N.E. Of Whitehall, Montana, Kenneth M. Judd
Geological Report Of Conrow Wood Creek Area 8 Miles N.E. Of Whitehall, Montana, Kenneth M. Judd
Bachelors Theses and Reports, 1928 - 1970
Plane table and pacing methods were used in the mapping of the individual areas, but an automobile traverse was used to tie the independent areas into a composite group that would be useful for the entire zone. All land marks, section corners, roads, fence lines, drainage, and geologic features were plotted in the field and later transferred to a master map.
Geology And Geological Structure Of The Alberta And Saskatchewan Plains, William E. Topley
Geology And Geological Structure Of The Alberta And Saskatchewan Plains, William E. Topley
Bachelors Theses and Reports, 1928 - 1970
Alberta, responsible for ninety per cent of Canada's output, had, by 1947 entered into her fifth year of production decline. Only ten per cent of Canada's oil requirements were secured from home fields. Ninety per cent had to be imported, mainly from the United States. How long could imports be maintained on present levels? During the year, the United States had started rationing; in one sector of its domain. Would this become general? If so, what was the answer for Canada?
The Fort Union Formation Of Montana And Adjacent Areas, Charles Christman
The Fort Union Formation Of Montana And Adjacent Areas, Charles Christman
Bachelors Theses and Reports, 1928 - 1970
The Fort Union formation is one of the most important and best known geologic formations of the northern Great Plains, and is found lying almost horizontal at the surface over large areas in this region.
Manganese Oxide Deposits Near Butte And Development Since 1942, Emmett M. Gilmore
Manganese Oxide Deposits Near Butte And Development Since 1942, Emmett M. Gilmore
Bachelors Theses and Reports, 1928 - 1970
The manganese minerals occur in the peripheral zone of the Butte district with quartz in veins, which at depth contain galena and sphalerite closely associated with silver-bearing minerals. The manganese oxides are all oxidation products formed by weathering of primary rhodochrosite or rhodonite.
Concentration Of Manganese Dioxide From Philipsburg, Montana, W. M. Mcauliffe
Concentration Of Manganese Dioxide From Philipsburg, Montana, W. M. Mcauliffe
Bachelors Theses and Reports, 1928 - 1970
Imports of manganese ore probably supply a major proportion of the needs of the United States. Domestic production is reported to be higher than pre-war levels, but does not equal that of the peak production year of 1943. In 1946, the Anaconda Copper Mining Company accounted for 90 percent of the total shipments of manganese nodules, and this company is the largest producer of domestic metallurgical ore in the United States.
A Mineral Dressing Study Of The U.S. Grant Ore, John Emmett Murphy
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
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
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
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
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.