Inside the Factory

Season 4, Episode 8

Episode Title: Pencils

Air Date: 2019-03-19

Overview:

Gregg Wallace is in Germany at a historic pencil factory where they produce 600,000 writing implements a day. Cherry Healey examines the astonishing properties of graphite. Historian Ruth Goodman traces the origin of pencils to a 15th-century graphite discovery in the Borrowdale valley.