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Inside the Factorychevron_right
S04E08: PencilsGregg 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.
Genres:
Air Date:
Mar 19, 2019
Runtime:
59 minutes
Production:
Casts:
Paddy McGuinness, Cherry Healey, Ruth Goodman
