[Sault Sainte Marie Quadrangle: Single Record Data Listings]

Single record data listings taken during aerial gamma-ray and magnetic surveys of the Sault Sainte Marie Quadrangle in Michigan.
Date: February 1980
Creator: EG & G GeoMetrics
Object Type: Dataset
System: The UNT Digital Library

[Tawas City and Flint Quadrangles: Average Record Data Listings]

Average record data listings taken during aerial gamma-ray and magnetic surveys of the Tawas City and Flint quadrangles in Michigan.
Date: July 1981
Creator: EG & G GeoMetrics
Object Type: Dataset
System: The UNT Digital Library

[Tawas City and Flint Quadrangles: Single Record Data Listings]

Single record data listings taken during aerial gamma-ray and magnetic surveys of the Tawas City and Flint quadrangles in Michigan.
Date: July 1981
Creator: EG & G GeoMetrics
Object Type: Dataset
System: The UNT Digital Library

[Toledo Quadrangle: Average Record Data Listings]

Average record data listings taken during aerial gamma-ray and magnetic surveys of the Toledo quadrangle in Ohio and Michigan.
Date: June 1981
Creator: EG & G GeoMetrics
Object Type: Dataset
System: The UNT Digital Library
Annual Report of Research and Technologic Work on Coal: Fiscal Year 1941 (open access)

Annual Report of Research and Technologic Work on Coal: Fiscal Year 1941

Report issued by the U.S. Bureau of Mines discussing the annual report over the research and technology of coal during 1941. As stated in the foreword, "these investigations increase our fund of exact knowledge on the properties and composition of American coals and lead to better methods in mining, preparing, storing, and utilizing coal" (p. 4). This report includes tables, illustrations, photographs, and a map.
Date: November 1941
Creator: Fieldner, Arno Carl & Schmidt, L. D.
Object Type: Report
System: The UNT Digital Library
Gas Masks for Gases Met in Fighting Fires (open access)

Gas Masks for Gases Met in Fighting Fires

Technical paper issued by the Bureau of Mines over the development of gas masks designed for fighting fires. The characteristics of the different types of masks in development are presented. This paper includes tables, illustrations, and photographs.
Date: August 1921
Creator: Fieldner, Arno Carl; Katz, Sidney H. & Kinney, Selwyne P.
Object Type: Report
System: The UNT Digital Library
Copper Mining in North America (open access)

Copper Mining in North America

From introduction: "In this paper are assembled and summarized many subjects relating to the copper industry in North America. Production of mines and districts, history of the industry in North America. Production of mines and districts, history of the industry, geology, of the principal deposits, and mining methods and costs are discussed."
Date: 1938
Creator: Gardner, E. D.; Johnson, C. H. & Butler, B. S.
Object Type: Report
System: The UNT Digital Library
Aerial Gamma Ray and Magnetic Survey, Final Report. Volume 1: Peninsula Portion, Hancock Quadrangle (Michigan), Ashland Quadrangle (Wisconsin, Minnesota, and Michigan), Iron River Quadrangle (Michigan and Wisconsin), and Marquette Quadrangle (Michigan) (open access)

Aerial Gamma Ray and Magnetic Survey, Final Report. Volume 1: Peninsula Portion, Hancock Quadrangle (Michigan), Ashland Quadrangle (Wisconsin, Minnesota, and Michigan), Iron River Quadrangle (Michigan and Wisconsin), and Marquette Quadrangle (Michigan)

First volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of four quadrangles in Wisconsin, Minnesota, and Michigan including documentation about data collection and analysis.
Date: May 1979
Creator: GeoMetrics, Inc.
Object Type: Report
System: The UNT Digital Library
Aerial Gamma Ray and Magnetic Survey, Final Report. Volume 1: Rice Lake Quadrangle (Wisconsin), Iron Mountain Quadrangle (Wisconsin/Michigan), Eau Claire Quadrangle (Wisconsin/Minnesota), and Green Bay Quadrangle (Wisconsin) (open access)

Aerial Gamma Ray and Magnetic Survey, Final Report. Volume 1: Rice Lake Quadrangle (Wisconsin), Iron Mountain Quadrangle (Wisconsin/Michigan), Eau Claire Quadrangle (Wisconsin/Minnesota), and Green Bay Quadrangle (Wisconsin)

A high sensitivity airborne radiometric and magnetic survey of the Rice Like, Iron Mountain, Eau Claire and Green Bay 1:250,000 NMTS Quadrangles within the states of Wisconsin, Michigan, and Minnesota. A total of 10,340 line miles of high sensitivity radiometric and magnetic data were collected within these quadrangles. Traverse lines were flown at a spacing of 3.125 miles in an east/west direction at a 18.375 miles seperation. All data were collected utilizing a fixed wing aircraft and over 3,500 cubic inches of Nal crystal detector. Magnetometer data were collected utilizing a high sensitivity proton magnetometer. Data were recorded digitally at 1.0 second intervals aboard the aircraft. Navigation was performed using both visual and doppler techniques. All data presented in this report as corrected profiles of all radiometric variables, magnetic data, radar and barometric altimeter data, air temperature and airborne bismuth contributions. Radiometric data presented are corrected for Comptron Scatter, altitude dependence and atmospheric Bismuth. These data are also presented on microfiche, and digital magnetic tapes. In addition, anomaly maps and inerpretation maps are presented in relating known geology or soil distribution to the corrected radiometric magnetic data.
Date: April 1987
Creator: GeoMetrics, Inc.
Object Type: Report
System: The UNT Digital Library
Aerial Gamma Ray and Magnetic Survey, Final Report. Volume 2: Ashland Quadrangle (Wisconsin, Michigan, and Minnesota) (open access)

Aerial Gamma Ray and Magnetic Survey, Final Report. Volume 2: Ashland Quadrangle (Wisconsin, Michigan, and Minnesota)

Second volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of the Ashland quadrangle including maps documenting geophysical and geochemical data.
Date: May 1978
Creator: GeoMetrics, Inc.
Object Type: Report
System: The UNT Digital Library
Aerial Gamma Ray and Magnetic Survey, Final Report. Volume 2: Iron Mountain Quadrangle (Wisconsin and Michigan) (open access)

Aerial Gamma Ray and Magnetic Survey, Final Report. Volume 2: Iron Mountain Quadrangle (Wisconsin and Michigan)

Second volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of the Iron Mountain quadrangle including maps documenting geophysical and geochemical data.
Date: April 1978
Creator: GeoMetrics, Inc.
Object Type: Report
System: The UNT Digital Library
Aerial Gamma Ray and Magnetic Survey, Final Report. Volume 2: Iron River Quadrangle (Michigan and Wisconsin) (open access)

Aerial Gamma Ray and Magnetic Survey, Final Report. Volume 2: Iron River Quadrangle (Michigan and Wisconsin)

Second volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of the Iron River quadrangle including maps documenting geophysical and geochemical data.
Date: May 1978
Creator: GeoMetrics, Inc.
Object Type: Report
System: The UNT Digital Library
Aerial Gamma Ray and Magnetic Survey, Final Report. Volume 2: Marquette Quadrangle (Michigan) (open access)

Aerial Gamma Ray and Magnetic Survey, Final Report. Volume 2: Marquette Quadrangle (Michigan)

Second volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of the Marquette quadrangle including maps documenting geophysical and geochemical data.
Date: May 1978
Creator: GeoMetrics, Inc.
Object Type: Report
System: The UNT Digital Library
Aerial Gamma Ray and Magnetic Survey, Final Report. Volume 2: Peninsula Portion, Hancock Quadrangle (Michigan) (open access)

Aerial Gamma Ray and Magnetic Survey, Final Report. Volume 2: Peninsula Portion, Hancock Quadrangle (Michigan)

Second volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of the Hancock quadrangle including maps documenting geophysical and geochemical data.
Date: May 1978
Creator: GeoMetrics, Inc.
Object Type: Report
System: The UNT Digital Library
Aerial Gamma Ray and Magnetic Survey, Final Report. Volume 2a: Ashland Quadrangle (Wisconsin, Michigan, and Minnesota) (open access)

Aerial Gamma Ray and Magnetic Survey, Final Report. Volume 2a: Ashland Quadrangle (Wisconsin, Michigan, and Minnesota)

Second volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of the Ashland quadrangle including magnetic, ancillary and radiometric data.
Date: May 1978
Creator: GeoMetrics, Inc.
Object Type: Report
System: The UNT Digital Library
Aerial Gamma Ray and Magnetic Survey, Final Report. Volume 2a: Iron Mountain Quadrangle (Wisconsin and Michigan) (open access)

Aerial Gamma Ray and Magnetic Survey, Final Report. Volume 2a: Iron Mountain Quadrangle (Wisconsin and Michigan)

Second volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of the Iron Mountain quadrangle including magnetic, ancillary and radiometric data.
Date: April 1978
Creator: GeoMetrics, Inc.
Object Type: Report
System: The UNT Digital Library
Aerial Gamma Ray and Magnetic Survey, Final Report. Volume 2a: Iron River Quadrangle (Michigan and Wisconsin) (open access)

Aerial Gamma Ray and Magnetic Survey, Final Report. Volume 2a: Iron River Quadrangle (Michigan and Wisconsin)

Second volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of the Iron River quadrangle including magnetic, ancillary and radiometric data.
Date: May 1978
Creator: GeoMetrics, Inc.
Object Type: Report
System: The UNT Digital Library
Aerial Gamma Ray and Magnetic Survey, Final Report. Volume 2a: Marquette Quadrangle (Michigan) (open access)

Aerial Gamma Ray and Magnetic Survey, Final Report. Volume 2a: Marquette Quadrangle (Michigan)

Second volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of the Marquette quadrangle including magnetic, ancillary and radiometric data.
Date: May 1978
Creator: GeoMetrics, Inc.
Object Type: Report
System: The UNT Digital Library
Aerial Gamma Ray and Magnetic Survey, Final Report. Volume 2a: Peninsula Portion, Hancock Quadrangle (Michigan) (open access)

Aerial Gamma Ray and Magnetic Survey, Final Report. Volume 2a: Peninsula Portion, Hancock Quadrangle (Michigan)

Second volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of the Hancock quadrangle including magnetic, ancillary and radiometric data.
Date: May 1978
Creator: GeoMetrics, Inc.
Object Type: Report
System: The UNT Digital Library

[Iron Mountain Quadrangle: Average Record Data Listings]

Average record data listings taken during aerial gamma-ray and magnetic surveys of the Iron Mountain Quadrangle in Wisconsin and Michigan.
Date: April 1987
Creator: GeoMetrics, Inc.
Object Type: Dataset
System: The UNT Digital Library

[ron Mountain Quadrangle: Single Record Data Listings]

Single record data listings taken during aerial gamma-ray and magnetic surveys of the Iron Mountain Quadrangle in Wisconsin and Michigan.
Date: April 1987
Creator: GeoMetrics, Inc.
Object Type: Dataset
System: The UNT Digital Library
Frame-Lifting Device for Disk Plows or Similar Implements. (open access)

Frame-Lifting Device for Disk Plows or Similar Implements.

Patent for "improvements in disk plows and similar implements, and especially to means employed for raising and lowering the frames of said plows in order to regulate the depth of the furrow" (lines 9-13).
Date: October 30, 1900
Creator: Hendon, Walter Preston
Object Type: Patent
System: The Portal to Texas History
Rape as a Forage Crop (open access)

Rape as a Forage Crop

Report discussing the cultivation of the rape plant as a forage crop, including its varieties, soil requirements and preparation, and harvesting. Also describes various uses of rape as a forage crop, weed destroyer, and cover crop.
Date: 1903
Creator: Hitchcock, A. S. (Albert Spear), 1865-1935
Object Type: Pamphlet
System: The UNT Digital Library
Coal-Mine Accidents in the United States and Foreign Countries (open access)

Coal-Mine Accidents in the United States and Foreign Countries

From Introduction: "The lack of comparable and accurate statistics of coal-mine accidents in the united States as a whole led the Bureau of Mines in 1911 to undertake the collection of such data. The mining departments of the leading foreign coal-producing countries have long taken cognizance of the importance of statistics. The bureau feels that in presenting the tables embodied in this report it is offering the and comparable statistics of coal-min accidents for the country as a whole that have ever been published."
Date: 1913
Creator: Horton, Frederick W.
Object Type: Report
System: The UNT Digital Library