The recent sinkholes on I-80 were caused by long-abandoned mines. See the map showing hundreds of closed New Jersey mines.
Traffic around Morris County is slowed down after another sinkhole developed on Interstate ... here 350 years before," says Mine Hill Mayor Sam Morris. "They would go in and chip it out and ...
Fast forward to the sinkhole on I-80 east in December, the state Department of Transportation says an abandoned mine collapse was the cause. A state Department of Environmental Protection map shows ...
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