Suddenly, there's an explosion in front of your car. Through the smoke, you see a manhole cover flipping through the air like a giant POG (if you were a kid in the '90s, you'd get that reference).

Pittsburgh police have closed a block of Grant Street to traffic in Downtown Pittsburgh as at least two manhole covers along ...

Duquesne Light Company and Pittsburgh Fire worked to remove additional manhole covers to increase ventilation after an 'electrical malfunction.' ...