EarthWorks Geospatial Catalog

King County, Washington : coal mine hazards

Description
King County, Washington coal mine hazards. The King County Sensitive Areas Ordinance (SAO) defines coal mine hazard areas as those areas directly underlain by or adjacent to or affected by abandoned coal mine workings such as adits (a nearly horizontal entrance to a mine), drifts (a secondary passageway between two main shafts) tunnels, or air shafts.
Publisher
King County GIS Center
Year
2003
Held by
Harvard
More details at