Readme.txt,	February 18, 1999
Explanation of digital data files for OFR 98-489, 'Digital mining claim density map for Federal lands in Montana: 1996' by Harry Campbell and Paul Hyndman, USGS, Spokane Field Office.  03/98

To import the Arc/Info EXPORT-format, version 7, files into your workspace, follow the instructions of your particular software.

NRIS = Natural Resources Information System, Montana State Library


Primary Arc/Info EXPORT-format files (*.e00) necessary to re-create the mine claim density map

Mt_clms.e00 - Montana Public Land Survey System (PLSS) coverage by NRIS, with mining claim density data as attributes.  Only those sections with mine claim data are included in this file.


Additional Arc/Info EXPORT-format files (*.e00) necessary to re-create the mine claim density map

ab30.e00 - county boundaries in Montana from NRIS
ab41.e00 - Montana state boundary from NRIS 
ct106.e00 - place names and cities used for the Montana map from NRIS 
mt_meridian.e00 - meridian reference lines created from the Montana PLSS
tic_cov.e00 - point coverage representing tics from the Montana PLSS tics


Arc/Info ALM, key, and txt files necessary to re-create the mine claim density map

mt_clms.aml - Arc/Info program that creates a graphics file (suggest mt_clms.gra) of the map
mt_clms.key - legend key for mt_clms.aml
mt_clms.txt - legend text for mt_clms.aml
mt_credit.txt - credit information for mt_clms.aml
mt_page.aml - program makes a page-sized plot from the mt_clms.gra file
mt_prj.txt - projection information for mt_clms.aml
scale2b2.aml - scale bar program, modified by Douglas Causey, USGS


Arc/Info files for printing the maps

mt_clms.gra - Arc/info graphics file of the mining claim density map (40 by 30  inches)
mt_page.gra - Arc/Info graphics file of the page-sized plot
mt_clms.eps - Encapsulated PostScript file of the mining claim density map (40 by 30 inches)
mt_page.eps - Encapsulated PostScript file of the page-sized plot
mt_clms.hp - HPGL2 file of the mining claim density map (40 by 30 inches)
mt_page.hp - HPGL2 file of the page-sized plot