Reactivity in the South Spoils and Hillside Dump at the Midnite Mine (open access)

Reactivity in the South Spoils and Hillside Dump at the Midnite Mine

The Midnite Mine is an inactive open-pit uranium mine located on the Spokane Indian Reservation in Washington State. Drill samples from two large waste rock dumps on the site, known as South Spoils and Hillside Dump, were collected with a Becker hammer drill and evaluated to determine potential of the rock to generate acid mine drainage (AMD). Waste rock at this mine contains both pyrite and uranium, and AMD effects are more complicated on this site than most in that uranium is soluble in both acidic and neutral aqueous solutions. Although AMD protocols identified 26% of the South Spoils samples as potentially acid, under 7% of the spoil samples were actually producing acid. Considerable calcite exists in the South Spoils, and weathering feldspars further contribute to acid neutralization. The Hillside Dump has low concentrations of pyrite and calcite that acid-base accounting protocols would predict to be non-acidic. Accumulation of sulfate in rocks with concentrations of less than 0.3% S causes some of those normally non-acid producing rocks to produce acid in the Hillside Dump.
Date: 1996
Creator: Moore, Bruce W.; Price, Jesse W. & Gardner, Ted
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.
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 (open access)

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
Mercury: A Materials Survey (open access)

Mercury: A Materials Survey

Report issued by the U.S. Bureau of Mines discussing materials surveys conducted on mercury. As stated in the foreword, "the surveys dealing with metals and minerals summarize the demand-supply position in the United States and include information on production, imports, consumption, exports, substitutes, and pertinent history" (p. v). This report includes maps, tables, illustrations, and photographs.
Date: 1959
Creator: Pennington, James W. & Bailey, Edgar H.
System: The UNT Digital Library
Midnite Mine Summary Report (open access)

Midnite Mine Summary Report

The Midni'e Mine is an inactive, hard-rock uranium mine in Stevens County, WA. Oxidation of sulfide-containing minerals in the ore body produces large quantities of acidic water. The U.S. Bureau of Mines was directed by Congress in Fiscal Year 1994 to perform technological research on the treatment of radioactive water and disposal of treatment residues at the Midnite Mine and en overall site reclamation. This Report of Investigations summarizes the studies that were completed on: 1) treatment alternatives for uranium contaminated acid mine drainage, and 2) overall site reclamation, including: ground water flowpaths in the bedrock, radiation, and waste rock reactivity. As an aid to site reclamation, a Geographic Information System database was also produced that contains available current and historic data and information on the Midnite Mine. This report explains the scope of the Bureau's study and summarizes the results of its investigations.
Date: 1996
Creator: Dean, N. E.; Boldt, C. M. K.; Schultze, L. E.; Nilsen, D. N.; Isaacson, A. E.; Williams, B. C. et al.
System: The UNT Digital Library
Diatomites of the Pacific Northwest as Filter-Aids (open access)

Diatomites of the Pacific Northwest as Filter-Aids

From Introduction Purpose of Investigation: "To determine some of the physical and chemical properties of known Pacific Northwest diatomites, the present investigation was started in 1938 by the Bureau of Mines in cooperation with the College of Mines, University of Washington.
Date: 1944
Creator: Skinner, Kenneth G.; Dammann, Arthur A.; Swift, Roy E.; Eyerly, George B. & Shuck, Gordon R., Jr.
System: The UNT Digital Library
Data Dictionary and Discussion for the Midnite Mine GIS Database (open access)

Data Dictionary and Discussion for the Midnite Mine GIS Database

Abstract: A geographic information system (GIS) database has been developed by the U.S. Bureau of Mines (USBM) for the Midnite Mine and surroundings in northeastern Washington State (Stevens County) on the Spokane Indian Reservation. The mine is an open pit uranium mine which has been inactive since 1981. The GIS database was compiled to serve as a repository and source of historical and research information on the mine site. The database supported USBM hydrological and reclamation research on the mine site. The database also will be used by the Bureau of Land Management and the Bureau of Indian Affairs (as well as others) for environmental assessment and reclamation planning for future remediation and reclamation of the site. This report describes the data in the GIS database and their characteristics. The report also discusses known backgrounds on the data sets and any special considerations encountered by the USBM in developing the database. Most of the database also is planned to be available to the public as a two-CD-ROM set, although separately from this report.
Date: 1996
Creator: Peters, Douglas C.; Smith, M. Antoinette & Ferderer, David A.
System: The UNT Digital Library
Ochers and Mineral Pigments of the Pacific Northwest : Occurrence, Possible Methods of Preparation, and Testing of Ochers, Siennas, and Colored Clays (open access)

Ochers and Mineral Pigments of the Pacific Northwest : Occurrence, Possible Methods of Preparation, and Testing of Ochers, Siennas, and Colored Clays

From Introduction: "A review is given of the nomenclature, sources, imports, statistics, common methods of preparation, and testing of mineral pigments. A description of the Deer Park-Spokane colored-clay district and the laboratory methods of preparation of these colored clays, ochers, and siennas follows. The following report is merely preliminary in nature, only three months during the summer of 1927 being devoted to the laboratory investigation."
Date: 1929
Creator: Wilson, Hewitt
System: The UNT Digital Library
Quicksilver (open access)

Quicksilver

From Introduction: "Material for this report was gathered during the last quarter of 1928 and the first quarter of 1929, when the author visited the quick-silver-producing districts of California, Nevada, Texas, Oregon, Washington and Arizona to view the progress made in recent years and gather material for a comprehensive study of the present-day quicksilver industry of the United States."
Date: 1931
Creator: Schuette, C. N.
System: The UNT Digital Library