New Jersey has nearly 600 abandoned mines, according to state officials. (See an interactive map of abandoned mine locations below.) “They’re everywhere,” Timothy Rack, safety and compliance ...

More than 85% of the state's abandoned mines excavated iron-bearing magnetite ore from a wide band of hard rock formations known as the Highlands Region. Story continues below map of abandoned ...

But the old mines also left behind a legacy of trouble for today’s Westerners. Abandoned mines dot the Western landscape, polluting the region’s streams with acid mine drainage and connecting the ...