DNR Report 350: 2001; Stockpile Ownership, Composition, and Use for Two Study Areas Located near Virginia and Calumet, Minnesota

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Executive Summary extracted from page i of report 350, 2001:

EXECUTIVE SUMMARY This report summarizes the results of a data collection project focused on stockpile ownership, material composition, and material use for two study areas located near Virginia and Calumet,Minnesota. The information collected may be used to determine the suitability of stockpile materials for future use. Funding for the project was from the Legislative Commission on Minnesota Resources. The project was conducted by the Minnesota Department of Natural Resources, Division of Lands and Minerals.

Surface and mineral ownership research was completed for 2,839.32 acres in the Virginia study area. A total of 4,067.02 acres were researched in the Calumet study area, with an additional 2,498.99 acres, which were previously researched, checked for ownership changes. Stockpile ownership was determined for a majority of the stockpiles located within the study areas, however, many stockpiles still have undetermined ownership.

A total of 232 stockpiles were inventoried in the two study areas. The stockpile inventory involved gathering information regarding material composition, material classification, sample analysis, and volume estimation. Material was classified into ten material types based upon geology and iron content. The footprint of each stockpile was digitized to capture the location of the stockpile.

Eighty-two samples were collected from stockpiles. The samples were tested for aggregate and iron ore. Aggregate tests included: specific gravity, absorption, soundness, and gradations. The test results were compared to the Minnesota Department of Transportation specifications for general aggregate use. Iron ore testing was comprised of chemical assays of the eight most common oxides.

A relational database was designed to store the information gathered for this project. This is the first known attempt to model and develop a database which would accommodate the complexities of stockpiles and ownership on the Mesabi Iron Range. The database consists of over 30 related tables and forms for browsing the information.

Vegetation covers on the stockpiles were determined through aerial photography interpretation and field checked during the fall of 2000. The current transportation infrastructure, which includes major roads and railroads, and private mining roads and old railroads, was mapped during the summer of 2000.

The stockpiles were examined for use in the aggregate industry and the iron mining industry. Generalizations can be made about each material type based upon qualitative and quantitative data. The material type with the highest potential for aggregate use was glacial overburden. Cretaceous ore and natural ore fine tailings have a high potential for iron.

1. View or download report:

Report 350: Stockpile Ownership, Composition, and Use for Two Study Areas Located near Virginia and Calumet, Minnesota This is a PDF file. You will need Adobe Acrobat Reader to download it.
(79 pages, 8.5 x 11 inches, 2.90 MB)
Author: MN DNR, Division of Lands and Minerals

Please note: Best results in viewing this report will be obtained by saving the file to a location of your choice and opening with Adobe Reader or Acrobat. Some report information may not display as a result of opening with Acrobat directly from a web browser.

This report has been scanned in and applied with optical character recognition (OCR) which electronically translates the scanned image printed text into machine-encoded text. This allows users to then
search the document by keywords in Adobe Reader or Acrobat software.

2. View or download plates:

Plate 1: Ownership, Calumet Study Area This is a PDF file. You will need Adobe Acrobat Reader to download it.
(48 x 36 inches, full size, 477 KB )
Author: MN DNR, Division of Lands and Minerals

Plate 2: Ownership, Virginia Study Area This is a PDF file. You will need Adobe Acrobat Reader to download it.
(48 x 36 inches, full size, 247 KB)
Author: MN DNR, Division of Lands and Minerals

Plate 3: Material Type, Vegetation, and Transportation, Calumet Study Area This is a PDF file. You will need Adobe Acrobat Reader to download it.
(48 x 36 inches, full size, 5 MB)
Author: MN DNR, Division of Lands and Minerals

Plate 4: Material Type, Vegetation, and Transportation, Virginia Study Area This is a PDF file. You will need Adobe Acrobat Reader to download it.
(48 x 36 inches, full size, 8.2 MB)
Author: MN DNR, Division of Lands and Minerals

3. Download data:

A zip file containing the digital data for Project 350; database, shapefiles, metadata, and photos (zip file, 13.5 MB).
A zip file containing the chemical assay results for Project 350
(zip file, 316 kb).

For more information:

Dennis Martin
500 Lafayette Road
St. Paul, Minnesota 55155-4045
tel. (651) 259-5405
fax (651) 296-5939
dennis.martin@state.mn.us

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