Great video!
While it's not the book promoted in the vid, my wife bought me Fender, The Sound Heard 'Round the World (Richard R. Smith) for Xmas last year. It's a good read.
The Fender factory featured in the 'tube wasn't the "original" Fender factory. Fender moved production to that facility in late 1951 or '52.
Assuming you don't count Leo's radio shop, the original Fender factory was two steel buildings on Santa Fe Ave in Fullerton, which was the production base starting in 1946. So much of the early stuff (including the Broadcaster/Tele) was developed there. By comparison, conditions in that factory make the building in the video look like a modern Behringer factory. No heating, little ventilation and poor lighting.
Saws were operated without guides, etc. Apparently several accidents did occur. One less serious anecdote has Fender recalling a near, well, circumcision by flying wood splinters. Which was mighty amusing to good old Leo.
Not that any of this was unusual for manufacturing at the time. Not at all.
The tagging of employee names in the vid is cool. Leo was an avid photog, so there are quite a few photos of employees in the Smith book, but only a few IDs (and not a single female employee is identified).