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U.S. Geological Survey
Data Series 124

Mining Claim Activity on Federal Land for the Period 1976 through 2003

By J. Douglas Causey

2005

thumbnail view map of northern Rockies

Previous reports on mining claim records provided information and statistics (number of claims) using data from the U.S. Bureau of Land Management's (BLM) Mining Claim Recordation System. Since that time, BLM converted their mining claim data to the Legacy Repost 2000 system (LR2000).

This report describes a process to extract similar statistical data about mining claims from LR2000 data using different software and procedures than were used in the earlier work. A major difference between this process and the previous work is that every section that has a mining claim record is assigned a value. This is done by proportioning a claim between each section in which it is recorded. Also, the mining claim data in this report includes all BLM records, not just the western states.

LR2000 mining claim database tables for the United States were provided by BLM in text format and imported into a Microsoft® Access2000 database in January, 2004. Data from two tables in the BLM LR2000 database were summarized through a series of database queries to determine a number that represents active mining claims in each Public Land Survey (PLS) section for each of the years from 1976 to 2002. For most of the area, spatial databases are also provided. The spatial databases are only configured to work with the statistics provided in the non-spatial data files. They are suitable for geographic information system (GIS)-based regional assessments at a scale of 1:100,000 or smaller (for example, 1:250,000).

 

 

File Name
File Type and Description
File Size
TEXT
ds-124.pdf
The main text of this paper as a 28-page PDF file
2.7 MB
metadata.txt
Metadata as an ASCII text file
16 KB
DATA PACKAGE
ds-124_data.zip
Package of data from all 15 states in a Zip file
24.8 MB compressed (opens to 377 MB)
DATA FOLDERS
(Each of these folders contains both uncompressed data and the same data compressed in a Zip file.)
Arizona
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46 MB
Arkansas
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1.5 MB
California
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54.6 MB
Colorado
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34.5 MB
Florida
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0.38 MB
Idaho
- - - - - - - - - - - - - - -
29.1 MB
Montana
- - - - - - - - - - - - - - -
22.6 MB
Nebraska
- - - - - - - - - - - - - - -
0.32 MB
Nevada
- - - - - - - - - - - - - - -
82.4 MB
New Mexico
- - - - - - - - - - - - - - -
22.5 MB
Oregon
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18.1 MB
South Dakota
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3.3 MB
Utah
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46.3 MB
Washington
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8.9 MB
Wyoming
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31.4 MB

For questions about the content of this report, contact Doug Causey

Version history



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URL of this page: http://pubs.usgs.gov/ds/124/
Maintained by: Michael Diggles
Created: July 29, 2005
Last modified: September 19, 2005 (mfd)