Underground Mine Buffer Region - ILMINES WIKI

illuMINEation: new project brings light to safety in underground mining - Worldsensing

Pope - ILMINES WIKI

Vermilion - ILMINES WIKI

Land mine - Wikipedia

MN Underground Mining

Coal mining - Underground mining

mining subsidence Panorama of subsidence produced by collapse of

Carroll - ILMINES WIKI

These Five Abandoned Mines Have Been Transformed into Subterranean Wonderlands, Travel

Underground Mine To Storage Facility Conversion - Penta Engineering Corporation

Land mine, Military Wiki

For Illinois homeowners worried about mine subsidence, here's a map that locates coal mines

Mining Industry Insulation - Firwin Corporation