Campbell, H.W. and Hyndman, P.C., 1996, Digital mining 
     claim density map for Federal lands in the Pacific 
     Northwest:  U.S. Geological Survey Open-File Report 
     96-737, 11 p., 1 plate.

This report describes the contents of a digital dataset 
(approximately 25 MB) which consists of ARC/INFO Export 
format files and associated macro programs.  The dataset 
includes a mining claim density map of the Pacific 
Northwest (Idaho, Oregon, and Washington).  This data was 
acquired from the Bureau of Land Management in September 
1994.  The user may analyze the four types of mining 
claims - lode, placer, mill, and tunnel.  "Open" vs. 
"Closed" claims are also two other categories that can be 
researched.  "Open" claims are those actively held when the 
data was acquired.  "Closed" claims are those no longer 
held by claimants.

The dataset also includes macro programs and complete plot 
files for creating paper copies of the map.  A page-sized, 
color version of the map is included in this report as well 
as a description of how to obtain the dataset over the 
Internet.

Requirements:  A networked computer system is required to 
copy the dataset from the host computer across the 
Internet.  A Geographic Information System capable of 
importing Arc/Info Export format files is required for 
access to the digital files.  All plot files are stored in 
HPGL2 format.  The digital dataset files are in UNIX ASCII 
format.