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Articles 1 - 30 of 46
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A Laboratory Investigation Of Mineralogical, Chemical And Physical Properties Of Limestone Aggregates, James L. Young Jr., James H. Havens, L. E. Gregg
A Laboratory Investigation Of Mineralogical, Chemical And Physical Properties Of Limestone Aggregates, James L. Young Jr., James H. Havens, L. E. Gregg
Kentucky Transportation Center Research Report
The project described in this report represents one phase of comprehensive research with all types of aggregates for highway paving mixtures in Kentucky. It was designed to show the fundamental properties of limestones which determine their suitability for this type of use -- particularly their so-called durability. For this reason, emphasis was placed on analysis of the intrinsic properties of the aggregates themselves rather than analysis of procedures or test methods, such as freezing and thawing.
Separation, Fractionation And Mineralogy Of Clays In Soils, James H. Havens, James L. Young Jr., Robert F. Baker
Separation, Fractionation And Mineralogy Of Clays In Soils, James H. Havens, James L. Young Jr., Robert F. Baker
Kentucky Transportation Center Research Report
This paper describes a working method for separation, fractionation and identification of colloid and colloidal clay minerals in soils. Technical information pertains to super-centrifugation, electron-microscopy and X-ray diffraction. On the basis of these techniques, twenty-two samples have been investigated in conjunction with a soil stud of pumping pavements.
Soils were first dispersed and separated by gravity sedimentation. Fractionation was accomplished by controlled super-centrifugation. The separated fractions were purified and then analyzed by X-ray diffraction. Computed size fractions were checked by shadow castings and lineal dimensions on electron micrographs.
Results include identification of the mineral or minerals present and the properties …
Tests On Cold Formed Steel Studs For The American Iron And Steel Institute, American Iron And Steel Institute
Tests On Cold Formed Steel Studs For The American Iron And Steel Institute, American Iron And Steel Institute
CCFSS Library (1939 - present)
1. SCOPE OF THIS REPORT. In connection with a prospective revised Second Edition of the Specifications the question has been raised as to the reliability of Section 3.7, Combined Axial and Bending Stress. This stipulation at the time wa.s adopted from the AISC Specifications without detailed investigation. It appeared pertinent, therefore, to subject this requirement to a detailed analysis for purposes of verification and possible improvement. The present Report gives an abbreviated account of this analysis and presents numerical and graphical data sufficient to judge the reliability of Section 3.7.
An Investigation Of Soil-Cement For Use In A Parking Area, William Gus Koulas
An Investigation Of Soil-Cement For Use In A Parking Area, William Gus Koulas
Civil Engineering ETDs
The writer has confined his studies to the use of soil-cement for a parking area located at the State Fair Grounds in Albuquerque, New Mexico. This investigation was made with the expectation of using the existing soil with a minimum amount of cement as recommended for field use in the construction of soil-cement into a durable, serviceable and economical paved area.
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.
The Continuous Electrodeposition Of Manganese, Joseph W. Joyce
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.
Cold-Applied Mastic-Type Crack And Joint Filler Compound, L. E. Gregg
Cold-Applied Mastic-Type Crack And Joint Filler Compound, L. E. Gregg
Kentucky Transportation Center Research Report
For the past year the Research Laboratory has been investigating joint filling compounds for concrete pavements with the object of determining whether extenders of one type or another placed in the hot-poured rubber-asphalt filler could reduce the cost without reducing the efficiency of these materials. Also included in the investigation was a search for new or different materials that might serve the same purpose but have properties that would make them more desirable or less expensive than the rubber-asphalt fillers. Because of the inconvenience and danger involved in the heating process to 450°F, and also the difficulty of controlling the …
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.
The Physiographic History Of Western Montana And Northwestern Idaho, John R. Kavanagh
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
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
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.
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.
Sulfatizing Roasting Of A Copper Sulfide Ore, Walter D. Finnegan
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.
The Drainage Problem In The Lewiston Area, Utah, Sterling Davis
The Drainage Problem In The Lewiston Area, Utah, Sterling Davis
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Often where water is artificially applied to land, means must be provided for removal of some of this water. Too much water is just as bad as too little. The increased use of irrigation water in Utah has caused an increased need for drainage. Some irrigated lands are poorly drained. With high water table, yield of crops has been materially decreased, and with present drainage methods only a part of possible production had been attained.
Geology Of Montana, Stanley G. Olson
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.
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.
Flotation Concentration Of A Montana Lead-Zinc-Silver-Ore, Grover W. Gregson
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
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.
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 Of The Lost Creek-Modesty Creek Area Deerlodge County, Montana, Howard B. Nickelson, Robert L. Pott
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
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.
A Study Of The Diffusion Of Electroplated Coatings In The Solid State., Michael R. Writt
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
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.
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.
The Drainage Problem In The Draper Area, Utah, Stanley H. Van Orman
The Drainage Problem In The Draper Area, Utah, Stanley H. Van Orman
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
As a rule, in the practice of irrigation, more water is delivered to a project than is used by the plants, evaporated, or removed by natural drainage. It is now generally accepted that, in the West, irrigation and drainage are necessary complementary practices. With comparatively good irrigation practice the efficiency is about 34 percent; that is, approximately one-third or the water is actually used by the crops. With rather poor irrigation practice the efficiency may drop as low as 12 percent.
A Study Of Land Drainage By Pumping From An Experimental Drainage Well In The Delta Area, Utah, Ellaf Arni Olafson
A Study Of Land Drainage By Pumping From An Experimental Drainage Well In The Delta Area, Utah, Ellaf Arni Olafson
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Although it is now generally accepted that, in the west, irrigation and drainage are necessarily complementary practices, the realization has been slow in developing. Recent estimates indicate that about 8 million acres of land under irrigation in the 17 western states require drainage. For most irrigated lands a depth to groundwater of at least five to ten feet is desirable. Very high capital as well as annual maintenance costs would be involved in meeting this minimum requirement with the usual types of tile and open drains. Indeed, in most instances it cannot economically be accomplished. The purpose of this study …
A Study Of The Physical Properties Of Low Tin Solders, Cornelius P. Dwyer
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.