If you live in a big city in a cold climate, you should keep an eye out for 100-pound cast-iron manhole covers suddenly launching 50 feet into the air. It’s unnervingly common and we’ll tell you why.
Stuff You Should Know
If you live in a big city in a cold climate, you should keep an eye out for 100-pound cast-iron manhole covers suddenly launching 50 feet into the air. It’s unnervingly common and we’ll tell you why.
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