Polar cold in Chicago: Why the rails seem to burn
2/1/2019, 10:10:38 AM
At temperatures below minus 40 degrees, the repair teams have great difficulty keeping the mass transit system running. They use a medieval method.
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2/1/2019, 10:10:38 AM
At temperatures below minus 40 degrees, the repair teams have great difficulty keeping the mass transit system running. They use a medieval method.