HEADWATERS ECONOMICS GEOGRAPHIC DATA LIBRARY DOCUMENTATION TITLE: Geodataset Name: NA_gsc_pastprod Geodataset Type: SHAPE Geodataset Feature: POINT GENERAL DESCRIPTION: This data layer is a compilation of gold, silver and copper mines that have been in past production but are not currently active. US DATA SOURCE: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. YT DATA SOURCE: Canadian Parks and Wilderness Society BC DATA SOURCE: BC Geological Survey, Ministry of Energy, Mines and Petroleum Resources US Scale of Original Source Maps: Varies US Date of Original Source Maps: 06/22/2006 YT Scale of Original Source Maps: Unknown YT Date of Original Source Maps: Unknown BC Scale of Original Source Maps: 1:50,000 BC Date of Original Source Maps: 2006 GEODATASET EXTENT: Western North America FEATURE ATTRIBUTE TABLES CODES AND VALUES: COM_MAJOR Major commodities. Copper Gold Silver DATA LINEAGE SUMMARY: The US data is a subset of the Mineral Resources Data System (MRDS). MRDS is mineral resource occurrence data covering the world, most thoroughly within the U.S. The dataset was downloaded from the USGS at http://tin.er.usgs.gov/mrds/mrds.zip and clipped to the study area boundaries. The item COM_MAJOR Like 'Gold%', 'Silver%', 'Copper%' and the item DEV_STAT = 'past producer' were selected to create this layer. The B.C. data is from the MINFILE which contains geological, location and economic information on over metallic, industrial mineral mines, deposits and occurrences. The BC data set was downloaded from http://www.em.gov.bc.ca/Mining/Geolsurv/MapPlace/geoData.htm and the item COMMOD_D1 = gold, silver or copper and the item STATUS_D = 'past producer' were selected. The Yukon data were provided by CommEn Space. The items COMM_D = 'Au%','Ag%','Cu%' and STATUS_D = '%PAST PRODUCER' were selected to create this layer. The three data sets were then merged together. MAP PROJECTION PARAMETERS PROJECTION ALBERS CONICAL EQUAL AREA DATUM NAD83 UNITS METERS SPHEROID GRS1980 PARAMETERS 1st standard parallel 29 30 0.000 2nd standard parallel 45 30 0.000 central meridian -96 00 0.000 latitude of projection's origin 37 30 0.000 false easting (meters) 0.00000 false northing (meters) 0.00000 DATA SOURCES CONTACT(S): Name: USGS Address: 12201 Sunrise Valley Dr., Mail Stop 954 Reston, VA 20192 Web site: http://tin.er.usgs.gov/mrds Contact Person: Peter Schweitzer Phone: (703) 648-6533 Fax: (703) 648-6252 Email: pschweitzer@usgs.gov Name: CPAWS Yukon Chapter Address: P.O. Box 31095 211 Main St. Whitehorse, Yukon, Y1A 5P7, Canada Contact: Randi Mulder, GIS Coordinator Phone: (867) 393-8080 Fax: (867) 393-8081 Email: info@cpawsyukon.org Web site: http://www.cpawsyukon.org Name: BC Geological Survey, Mining and Minerals Division Address: 5th Floor, 1810 Blanshard St. Victoria, BC V8W 9N3 Web site: http://www.em.gov.bc.ca/Mining/Geolsurv/Minfile/default.htm Contact Person: Larry Jones Phone: (250) 952-0386 Fax: (250) 952-0381 Email: Larry.Jones@gov.bc.ca HEADWATERS ECONOMICS CONTACT: Name: Headwaters Economics Geographic Data Library Abbr. Name: HEGDL Address: Headwaters Economics 566 Highland St. Helena, Montana 59601 Web site: http://www.headwaterseconomics.org Contact Person: Patty Gude Phone: (406)599-7425 Email: patty@headwaterseconomics.org