I hope you're talking about man hole covers that are at least ten years
old! Just to keep it appropriate for this list. :-)
Joe
At 09:44 AM 1/29/98 -0800, you wrote:
Actually, I
think it's so you can't drop them down the hole.
This is the reason.
Kevin
--
Kevin McQuiggin VE7ZD
mcquiggi(a)sfu.ca