Did you know that modern pencils owe it all to an ancient Roman writing instrument called a stylus? Learn more ... Other early styluses were made of lead, which is what we still call pencil cores, even though they actually are made of non-toxic graphite. read more
The "lead" pencil (which contains no lead) was invented in 1564 when a huge graphite (black carbon) mine was discovered in Borrowdale, Cumbria, England. The pure graphite was sawn into sheets and then cut into square rods. read more
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