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To: Djester62

Manhole covers are cast, not machined.


31 posted on 12/29/2011 8:10:38 AM PST by SeaHawkFan
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To: SeaHawkFan

Many manhole covers appear to be machined, after they are cast.


34 posted on 12/29/2011 8:36:27 AM PST by Paladin2
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