Re: Why are ManHole Covers Round?

On Jan 30, 2:11 pm, gcook...@xxxxxxx wrote:
because a circle is the only shape that can't fall in and crush the
head.


I always thought my hardhat would eventually be good for something
(other than a small bit of shade on a hot day). Now I know it's
purpose is to protect my head from falling manhole covers that don't
look like flying saucers. Very cool. Thanks.

Rich
.

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