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Application of Method of Characteristics to Model the Transport of Discrete Solids in Partially-Filled Pipe Flow

Description: Report issued by the National Bureau of Standards over transporting discrete solids in partially-filled flow pipes. The methods and application of drainage flow are discussed. This report includes tables, illustrations, and photographs.
Date: February 1982
Creator: Swaffield, J. A.
Partner: UNT Libraries Government Documents Department

Flood Prevention in Anthracite Mines, Western Middle and Southern Fields: Anthracite Region of Pennsylvania, Project Number 2

Description: From Summary: "This report covers the second in a series of five projects into which the Conowingo tunnel system has been divided for geographical and practical reasons. It outlines the construction work contemplated-to sink two shafts on the line of the main tunnel that are designated the Nos. 9A and 11 shafts, to turn off from the No. 9A shaft the Landsford and Lykens laterals, and to drive portions of the main tunnel."
Date: 1955
Creator: Ash, S. H. (Simon Harry), b. 1889; Dierks, H. A.; Kynor, H. D.; Lesser, W. H.; Miller, P. S. & Romischer, W. M.
Partner: UNT Libraries Government Documents Department

Core Drilling at Shaft Sites of Proposed Mine-Water Drainage Tunnel: Anthracite Region of Pennsylvania

Description: From Scope of Report: "This report deals with the diamond drilling of 15 holes at the shaft of the proposed main drainage tunnel and with the information obtained by a petrographic examination of the core drillings from these boreholes.
Date: 1952
Creator: Ash, S. H. (Simon Harry), b. 1889; Doherty, R. Emmet; Miller, P. S.; Romischer, W. M. & Smith, J. D.
Partner: UNT Libraries Government Documents Department

Mine Pumping Plants: Anthracite Region of Pennsylvania

Description: From Summary: "To obtain a reliable picture of the anthracite-mine-water problem and to solve that problem, it is necessary to have factual data on the volume and the quality and character of mine water handled by pumping plants in the anthracite region, as well as kinds of pumps utilized and problems concerning their operation. The main conclusion that be drawn from an investigation of drainage practices in the anthracite region is that, although efficient pumping layouts, tunnels for draining active mines, and large-scale surface-drainage facilities for keeping water out of mines are in use, the anthracite industry still is threatened with curtailment, to a major degree, and premature extinction because of the encroachment of water, unless remedial action is undertaken in the vary near future by all interests concerned."
Date: 1953
Creator: Ash, S. H. (Simon Harry), b. 1889; Hower, C. S.; Kennedy, D. O. & Lesser, W. H.
Partner: UNT Libraries Government Documents Department

Integrated Assessment of Hypoxia in the Northern Gulf of Mexico

Description: This document details the ecological and economic effects of low oxygen (hypoxic) conditions in the Gulf of Mexico. This condition is caused by deforestation, river channelization, and the overuse of nitrogen in agricultural fertilizer. This document summarizes scientific evidence for the causes of hypoxia, the negative impact on Gulf of Mexico fisheries, and long-term national strategies for managing and mitigating the problem.
Date: May 2000
Creator: National Science and Technology Council (U.S.). Committee on Environment and Natural Resources.
Partner: UNT Libraries

Good roads for farmers.

Description: Provides an overview of the best practices, costs, and recommended equipment for rural road building and maintenance. Describes the construction of earth roads, sand roads, sawdust or bark roads, corduroy roads, hard roads, gravel roads, shell roads, and stone roads.
Date: 1899
Creator: United States. Department of Agriculture.
Partner: UNT Libraries Government Documents Department

Alkali lands.

Description: Summarizes an 1898 study of the problem of alkaline soil conditions as the result of irrigation in Montana.
Date: 1909
Creator: United States. Department of Agriculture.
Partner: UNT Libraries Government Documents Department