The Mesabi Range Underground Mine Workings coverage is a polygon shapefile comprising detailed information on documented underground mine workings (shafts, drifts, mined...

The Mesabi Range Underground Mine Properties coverage is a polygon shapefile comprising the documented footprints of natural iron ore underground mine properties on the Mesabi...

The Mesabi Range Underground Mine Parcels coverage is a polygon shapefile comprising Public Land Survey (PLS) data for documented land parcels/properties associated with...

The Mesabi Range Outlines of Underground Caved Areas coverage is a polyline shapefile comprising documented outlines of underground caved areas as denoted on historical mine...