Photographs of historical mining operations in Colorado and Utah
A collection of photographs of mine sites, mining operations, and tailings taken prior to 1980 at a variety of sites throughout Colorado and Utah.
A database of photograph metadata is provided to contain the subject and location of each photograph.
Photographs are not strictly georeferenced; instead the state and
county of the subject is given for each photograph. Some photographs
have additional information such as USGS map quadrangle (in the 7.5
minute series) or PLSS (section, township, and range).
Attribute information describing the photos, their subjects, and the location of their subjects.
Arbitrary integer assigned to distinguish photograph records
Name of the photo image file, excluding extension
State in which the subject of the photo lies
County in which the subject of the photo lies
Name of the mine or other subject of the photo
Public Land Survey System description of the location of the subject
(section, township, range)
Name of the map quadrangle (usually 7.5 minute) containing the subject
Principal mineral commodity associated with the site
Principal author of the report in which the photograph originally
Photo or figure number of this photo within the original report
Caption for the photo given in the original report
Width of the image in pixels
Height of the image in pixels
Colorspace of the image, Gray or sRGB (color)
State and county FIPS code for the location of the subject, matches a
value in catalog.geo:code
Data dictionary for the attribute data
Row ID to facilitate changes in the table
Sequence index for ordering tables in display
Name of the database table
Sequence index for ordering fields within the tables in display
Field identifier within tables, typically somewhat mnemonic but also
generally short and simple to facilitate use in database software.
General category of information contained in the field
Brief descriptive text serving as an enhanced field label, may contain
spaces or other characters that would not work in database field names.
Longer text explaining what the field contents are, possibly with
examples and notes on the usage, scope, and history of those contents.
Hypertext link, where appropriate, to online information about the field
or its general contents. Used in some databases on MRData.usgs.gov to
link the data dictionary to USGS publications that explain the fields in
much greater detail.
Short identifier indicating the original source of the field or its
definition. Typically used where the field is carried forward from a
much older data source such as the NURE program.
Data type of the field as stored in MySQL
Data type of the field when exported as DBF
Maximum number of characters in the field.
For use with numeric fields in DBF files, the number of digits to the
right of the decimal point that will be exported.
For numeric fields only, the units of measure of the data in the field,
if units apply
Make available visual information about historical mines and mining operations that generally do not exist now in their original form. This site specific information can inform policy discussions with regard to site remediation.
McGregor, Joseph K., and Abston, C. C., 1994, Photographs of historical mining operations in Colorado and Utah from the U.S. Geological Survey Library: Data Series 12, U.S. Geological Survey,, Reston, VA.
PCX images were converted to PNG format using ImageMagick 6.7.7.
Image attribute data were converted from gsmphoto format to SQLite using PHP scripts, with small manual modifications to fix errors.
Image description and display software was built for the web using PHP and SQLite 3.
Data sources used in this process:
This report is preliminary and has not been reviewed for
conformity with U.S. Geological Survey editorial standards (or
with the North American Stratigraphic Code). Any use of trade,
product, or firm names is for descriptive purposes only and does
not imply endorsement by the U.S. Government.