Why Manhole Cover Sometimes Explode #shorts

in underground sewers there are a lot of gas built up from decomposing matter. most manhole cover explosions are typically caused when a spark from wiring ignites gas inside a sewer. Propeling these massive discs anywhere from 1 ft to 50 ft into the air, some cases also caused by some kid igniting it directly using firecrackers #unique #interesting #interestingfacts #uniquefacts