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Moving back as far as the Roman times, in ancient Rome Man has started using stone to cover drain covers.
The layman term for http://www.unterrichtsideen.ch/index.php?title=Currently-only-Jonite-reinforced-stone-is-the-only-stone-material-tested-and-certified-based-on-the-BS-EN-Standard-r (grate) is manhole cover. Say "manhole cover" and pictures of spies/heros making use of http://wiki.dsd.bz/index.php?title=Jonite-Stone-Drain-Cover-l popping out of manhole cover in Hollywood films appear.
Historically since that time Man invented the sewage system since the Roman Times to d