Inside the Factory - Season 4 Episode 8
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.
First Air Date : 2015-05-05
Last Air date : 2025-02-04
Runtime : 57 minutes
Genre : Documentary
Cast : Paddy McGuinness, Cherry Healey, Ruth Goodman
Crew :
Quality : 
Subtitles :
- Season 4 : Episode 12018-07-17
- Season 4 : Episode 22018-07-24
- Season 4 : Episode 32018-07-31
- Season 4 : Episode 42018-08-14
- Season 4 : Episode 52019-02-26
- Season 4 : Episode 62019-03-05
- Season 4 : Episode 72019-03-12
- Season 4 : Episode 82019-03-19
- Season 4 : Episode 92019-03-26
