Unioned layers of coal resource calculation in the Kaiparowits Plateau study area, southern Utah (kai*fing)

These are shapefiles and polygon coverages that contain
numerous attributes of information on coal in the Calico and
A-sequences of the Upper Cretaceous Straight Cliffs
Formation in the Kaiparowits Plateau study area in southern
Utah. These layers were derived from a "union" process of
combining numerous polygon coverages using the Environmental
Systems Research Institute, Inc. (ESRI) Arc/Info UNION
command, and finally calculating coal tonnage in INFO. Net
coal thickness values are from 209 data points and represent
all coal beds that are more than 1 foot thick.
The outside polygon defines the base of the coal-bearing
Calico and A-sequences east of 112 degrees of longitude. The
northern boundary is delineated by the Paunsaugunt fault and
basal outcrops of volcanic rocks of Tertiary age.