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Acid-Mine-Drainage Problems: Anthracite Region of Pennsylvania

Description: Report from the U.S. Bureau of Mines discussing the anthracite region of Pennsylvania and the efforts to prevent coal-mine drainage into nearby streams. According to the introduction, "The purpose of this report is not to develop a practicable or feasible method or process of treating acid mine water but rather to present available factual and deduced data that may be useful in showing pH range over which the treatment is to take place and the sludge products most likely to be handled" (p. 2).
Date: 1951
Creator: Ash, S. H. (Simon Harry), b. 1889; Felegy, E. W.; Kennedy, D. O. & Miller, P. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Albert Gallatin: His Position in American Legislation and Diplomacy

Description: It shall be the purpose of this study to present an accounting of the career of public service of Gallatin as a legislator and as a diplomat, showing the great value of his service to the country of his adoption. The presentation shall be divided into several sections, namely those of Gallatin's early experiences in America, his activities while Secretary of the Treasury, while a commissioner at the Treaty of Ghent, and that part of his period of public service following Ghent.
Date: 1951
Creator: Seabrook, John Cotton
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

[Alyse, Pam and Byrd IV playing]

Description: Photograph of Pam, Alyse and Byrd IV standing around an upside-down stroller. John Williams is sitting in a chair near them, with his leg propped up on a table. They appear to be in a living room with a television, table, and a display cabinet. Byrd IV is dressed as a cowboy and is wearing a cowboy hat.
Date: [1951..]
Creator: Williams, Byrd M. (Byrd Moore), III
Item Type: Refine your search to only Photograph
Partner: UNT Libraries Special Collections
open access

Analysis of means of improving the uncontrolled lateral motions of personal airplanes

Description: From Summary: "A theoretical analysis has been made of means of improving the uncontrolled motions of personal airplanes. The purpose of this investigation was to determine whether such airplanes could be made to fly uncontrolled for an indefinite period of time without getting into dangerous attitudes and for a reasonable period of time (1 to 3 min) without deviating excessively from their original course. The results of this analysis indicated that the uncontrolled motions of a personal airpl… more
Date: 1951
Creator: McKinney, Marion O., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Analysis of plane-plastic stress problems with axial symmetry in strain-hardening range

Description: From Introduction: "A simple method of solving plane-plastic-stress problems with axial symmetry in the strain-hardening range for finite strains were developed at the NACA Lewis laboratory during 1949-1950. This method is based on the deformation theory of Hencky and Nadai (references 7 to 9), which is derived for the condition of constant directions and ratios of the principal stresses during loading."
Date: 1951
Creator: Wu, M. H. Lee
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Analysis of the effects of boundary-layer control in the take-off and power-off landing performance characteristics of a liaison type of airplane

Description: From Summary: "A performance analysis has been made to determine whether boundary-layer control by suction might reduce the minimum take-off and landing distances of a four-place or five-place airplane or a liaison type of airplane below those obtainable with conventional high-lift devices. The airplane was assumed to have a cruise duration of 5 hours at 60-percent power and to be operating from airstrips having a ground friction coefficient of 0.2 or a combined ground and braking coefficient o… more
Date: 1951
Creator: Horton, Elmer A.; Loftin, Laurence K., Jr.; Racisz, Stanley F. & Quinn, John H., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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