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The Feldspars of the New England and North Appalachian States
From Introduction: "The investigations presented in this bulletin have been undertaken by the bureau with a view to a better understanding of the conditions which confront the producer of commercial feldspar and also with the object of determining wherein the various deposits of feldspar differ."
Date:
1916
Creator:
Watts, A. S.
System:
The UNT Digital Library
Analyses of Coals in the United States with Descriptions of Mine and Field Samples Collected between July 1, 1904 and June 30, 1910 Part 2. Descriptions of Samples
From Introduction: "This volume contains the descriptions of the samples whose analyses are published in the preceding volume, Part I of this bulletin. The descriptions have been compiled from the notebooks of the persons who collected the samples, have been condensed from accounts given in published reports of the United States Geological Survey, or have furnished by the collection themselves. Inasmuch as the descriptions represent the work of many persons during a period of six years, and inasmuch as they were recorded under widely differing conditions, they necessarily vary in fullness detail."
Date:
1913
Creator:
Lord, N. W.
System:
The UNT Digital Library
Titanium Resources of Nelson and Amherst Counties, Virginia: (In Two Parts), 2. Nelsonite
Report issued by the Bureau of Mines over nelsonite occurrences in Virginia. Samples were collected by diamond-drilling. This report includes tables, maps, photographs, and illustrations.
Date:
1964
Creator:
Fish, George E., Jr. & Swanson, Vernon F.
System:
The UNT Digital Library
The Synthetic Liquid Fuel Potential of Virginia
Report documenting the suitability of Virginia for plant locations to produce synthetic liquid fuels, based on raw materials, water sources, and local interest.
Date:
April 2, 1951
Creator:
Ford, Bacon, and Davis
System:
The UNT Digital Library
Potash Salts from Texas-New Mexico Polyhalite Deposits: Commercial Possibilities, Proposed Technology, and Pertinent Salt-Solution Equilibria
From Introduction: "Figure 1 shows the location of sources that have been either exploited or seriously considered at one time or another, super-imposed upon a map indicating by small letters the order of consumption of K2O in the leading States; the amount used in these States, together with the percentage of the total consumption of potash used as fertilizer in the United States in 1939, is given in table 1. Figure 2 shows the domestic production and total consumption of potassium salts, in terms of tons of K2O, with the value per unit at the plants, for each year since 1913. Considered together, these two figures tell a significant story."
Date:
1944
Creator:
Conley, John E. & Partridge, Everett P.
System:
The UNT Digital Library
Methods and Apparatus Used in Determining the Gas, Coke, and By-Product Making Properties of American Coals: with Results on a Taggart-Bed Coal from Roda, Wise County, Virginia
From Introduction: "The results of this preliminary investigation, which were reported to the association at the 1928 convention, indicated, first, that fundamental information on the mechanism of carbonization throughout the entire range from low to high temperature coking is desired and, second, that a uniform basis upon which to compare the carbonizing properties of different coals should be developed."
Date:
1931
Creator:
Fieldner, A. C.; Davis, J. D.; Thiessen, R.; Kester, E. B. & Selvig, W. A.
System:
The UNT Digital Library
Recent Development of the Producer-Gas Power Plant in the United States
From Introduction: "A summary of the tests made at St. Louis and a resume of the conclusions to be drawn from the tests and from the opinions of gas-producer manufacturers on the status of the gas producer and gas engine was published in a Survey bulletin in 1907. As it is desirable to repeat much of the material that appeared in the former bulletin (now out of print), this presentation may be regarded as a revision of the previous one, although considerable information not previously available for publication has been added."
Date:
1910
Creator:
Fernald, Robert Heywood
System:
The UNT Digital Library
Résumé of Producer-Gas Investigations: October 1, 1904-June 30, 1910
From Scope of Report: "The purpose of this report is, therefore, to present in convenient form all the more important data accumulated in the course of the tests described, in order that the results may be readily accessible both to the Government officials having charge of the design, purchase, or care of power plants and to all persons interested in the development of the internal-combustion engine and the gas producer as means for utilizing the energy of fuels."
Date:
1911
Creator:
Fernald, R. H. & Smith, C. D.
System:
The UNT Digital Library