[time-nuts] Remove Pictic boards from envelopes

jimlux jimlux at earthlink.net
Tue Aug 10 22:55:25 UTC 2010

Alan Melia wrote:
> Pencil?? only us oldies know what that is....... it is surprising the "lead"
> pencil hasn't been banned under RoHS :-))
> Alan G3NYK

I don't know that "lead" (as in the element) has ever been used in 
pencils.. I read a fascinating book on the history of the pencil a few 
years back.. it described how graphite (the mines of Cumberland were 
famous for graphite with good writing/drawing properties) was called 
plumbago (lead ore) because chemical analysis didn't really exist and 
the dense black substance seemed to resemble lead.

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