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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