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Open-File Report 98-512

MAS/MILS Arc/Info Point Coverage for the Western U.S. (excluding Hawaii)

By J. Douglas Causey

Thumbnail of and link to report PDF (10.4 MB)Introduction

The U.S. Geological Survey has two international and one regional digital database that contains information on mineral properties. This report describes the conversion of selected data from one of the international databases - MAS/MILS (Mineral Availability System/Mineral Industry Location System) - into a spatial data product. The MAS/MILS database, obtained from the U.S. Bureau of Mines (USBM) upon its closure, contains over 221,000 records of mineral properties and processing facilities throughout the world. However, the majority of the records in the database are of sites located in the western U.S. This is due to the extensive mineral activity that has occurred in the West, and the work done by mineral professionals in the Western, Alaska, and Intermountain Field Operations Centers of the USBM.

The purpose of this project was to create a spatial coverage of the western U.S. containing mineral resource information. This coverage includes information for the states of Alaska, Arizona, California, Colorado, Idaho, Montana, Nevada, New Mexico, Oregon, Utah, Washington, and Wyoming. For this report, locations from MAS/MILS were converted to a point coverage using a geographic information system (GIS). All work was done using Arc/Info v. 7.0.4. There are 128,441 points in the coverage.

First posted August 17, 1999


  • Additional files TAR.Z (18 kB)
    AML, graphic, key, symbolset, and text files necessary to recreate digital map plates in an UNIX compressed TAR file.
  • Map files HP.Z (592 kB)
    HPGL2 format as an UNIX compressed (and, in some cases, TAR) file. Map scale: 1:500,000 Page size: 36 inches by 30 inches

For additional information, contact:
Geology, Minerals, Energy, and Geophysics Science Center
U.S. Geological Survey
345 Middlefield Road, MS 901
Menlo Park, CA 94025-3591

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Suggested citation:

Causey, J. D., 1998, MAS/MILS Arc/Info Point Coverage for the Western U.S. (excluding Hawaii): U. S. Geological Survey Open-File Report 98-512, 25 pp.,

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