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Sinking a Large-Diameter Concrete-Lined Access Shaft: Harold D. Roberts Tunnel, Colorado

Description: Report issued by the U.S. Bureau of Mines discussing sinking and excavation of large-diameter access shafts. As stated in the introduction, "this information circular describes the application of modern methods and equipment in sinking a vertical, 916-foot-deep by 16-foot-diameter, concrete-lined access shaft for the Harold D. Roberts tunnel near Montezuma, Colo." (p. 1). This report includes maps, tables, illustrations, and photographs.
Date: 1961
Creator: Bolmer, R. L.
Partner: UNT Libraries Government Documents Department

Executive Correspondence – Letters dtd 08/15/05 to Commissioners Hansen, Gehman, Coyle and Bilbray from Colorado Senator Ken Salazar

Description: Executive Correspondence – Letters dtd 08/15/05 to Commissioners Hansen, Gehman, Coyle and Bilbray from Colorado Senator Ken Salazar thanking them for hearing the testimony regarding DFAS Denver and requesting that the Commission take a hard look at all the data underpinning the Secretary’s recommendations
Date: August 23, 2005
Partner: UNT Libraries Government Documents Department

Food Habits of Stoneflies (Plecoptera) in the Gunnison and Dolores Rivers, Colorado

Description: Gut contents of 2,500 stonefly nymphs, comprising 10 species, from the Gunnison and Dolores Rivers, Colorado were examined from Dec., 1974-Oct., 1975. Perlidae species were carnivorous feeding primarily on chironomids, mayflies and caddisflies. Seasonal patterns of ingestion and preference varied among species and predator sizes and between rivers. Early instar polyphagous species utilized detritus in the fall, eventually shifting to carnivorous habits as they grew through winter-spring. Pteronarcids fed predominantly on detritus. Dietary overlap of predators was greatest in the Gunnison River, with subtle mechanisms such as prey species and size selectivity, temporal succession and seasonal shifts to detritus-plant material in some, providing reduction of competition. A more complete partitioning of prey resources was evident in the Dolores River.
Date: August 1976
Creator: Fuller, Randall L.
Partner: UNT Libraries

A Biological Survey of Colorado

Description: From introduction: "Report based chiefly on the field work prosecuted during 1905, 1906, 1907, and 1909. It is primarily a characterization of the several major distribution areas or life zones."
Date: August 17, 1911
Creator: Cary, Merritt
Partner: UNT Libraries Government Documents Department

Potato Culture on Irrigated Farms of the West

Description: "In the mountain valleys of Colorado are found conditions of altitude, soil, and moisture naturally favorable to the growth of the potato, with an almost entire absence of harmful freezes and bacterial enemies." -- p. 5. This bulletin explains how potatoes can be cultivated to thrive in the western United States.
Date: 1910
Creator: Grubb, E. H.
Partner: UNT Libraries Government Documents Department

Regional Geophysical Investigations of the Uravan Area, Colorado

Description: From introduction: Geophysical surveys have been made in the Uravan area, in southwest Colorado, with the aim of providing information on regional geology, especially on those aspects that may not be apparent from surface evidence alone. Aeromagnetic surveys were made in 1952, and regional gravity surveys were made during the summers of 1953 and 1954. Figure 1 shows the area covered. Information on surface geology was obtained from publications, from geologists working on the Colorado Plateau, and from personal observations.
Date: May 1956
Creator: Joesting, H. R. & Byerly, P. Edward
Partner: UNT Libraries Government Documents Department

Life in the Early Mining Camps of Colorado

Description: The story of the advancing American frontier has unending interest. Perhaps one of the most colorful and unusual frontier developments was that of the mining frontier in the Rocky Mountains of Colorado. During the years following the discovery of gold in 1858 and the early 1880's occurred an almost unprecedented evolution from a primitive pioneer society to complex industrial development.
Date: August 1954
Creator: Smith, Charles O.
Partner: UNT Libraries

Summary of Scenario Environmental Impacts - USAF

Description: Disregard Header and Footer restrictions. Brief Description: Disestablish the inpatient mission of the 10th Medical Group, USAF Academy, converting the hospital to a clinic with an ambulatory care center.
Date: June 7, 2005
Creator: United States. Department of Defense.
Partner: UNT Libraries Government Documents Department

Ft. Carson, CO, Demographics

Description: Disregard Header and Footer restrictions. Demographics The following tables provide a short description of the area near the Ft. Carson installation/activity.
Date: June 7, 2005
Creator: United States. Department of Defense.
Partner: UNT Libraries Government Documents Department

US Air Force Academy, CO

Description: Disregard Header and Footer restrictions. Demographics The following tables provide a short description of the area near the US Air Force Academy installation/activity.
Date: June 7, 2005
Creator: United States. Department of Defense.
Partner: UNT Libraries Government Documents Department

Ft. Carson: Environmental Impacts MED-0004 Realign Inefficient Inpatient Functions

Description: Disregard Header and Footer restrictions. This Medical JCSG proposal has 4 stationing actions that affect Army installations: 1. Disestablish the inpatient mission of the 10th Medical Group, USAF Academy, converting the hospital to a clinic with an ambulatory care center, and realign inpatient workload to Ft. Carson Army Hospital. 2. Disestablish the inpatient mission at Ft. Knox Medical Facility, converting the hospital to a clinic with an ambulatory care center. 3. Disestablish the inpatient mission at West Point's Medical facility, converting the hospital to a clinic with an ambulatory care center. 4. Disestablish the Ft. Eustis Medical facility. Medical workload transferred to Langley AFB, Portsmouth Naval Hospital and local civilian medical facilities. No MILCON is required to accomplish this recommendation as excess capacity is available in the receiving facilities. Ft. Eustis Medical Facility would be released for other activities.
Date: June 7, 2005
Creator: United States. Department of Defense.
Partner: UNT Libraries Government Documents Department

Nomenclature of Precambrian Rocks in Colorado

Description: Abstract: "The Precambrian rocks of Colorado consist of a metaphoric complex more than 1,700 million years in age, three groups of igneous rocks about 1,700, 1,400, and 1,000 million years in age, here designated informal age groups, and two areally restricted units of sedimentary rocks, one between 1,400 and 1,700 million years in age and one between 950 and 1,400 million years. A systematic nomenclature for many of the rocks does not exist, but the present state of knowledge will permit establishment of a comprehensive nomenclature. Numerous formal names that have been applied to elements of the Precambrian assemblage are appraised and classified in a table, and eight names are abandoned."
Date: 1977
Creator: Tweto, Ogden
Partner: UNT Libraries Government Documents Department

Development of a Mobile Compressor and Utility Station

Description: Report issued by the U.S. Bureau of Mines on the development of a mobile compressor and utility station in the oil-shale mine near Rifle, Colorado during 1949. The report includes photographs and illustrations of the mobile station.
Date: July 1950
Creator: Wright, Fred D. & Ballinger, Homer J.
Partner: UNT Libraries Government Documents Department