This has been posted on here before and I've watched it many times, but every time I do I can't help but think how wonderful it is to see how film was made in the past and so simple, with people actually feeling the film for defects for example.
According to a comment by an ex-kodak film engineer who actually briefly worked on that coating machine, the machine was actually already years old when that documentary was made and it wasn't replaced until the mid 60's when it couldn't keep up with how much film they needed to make a day!
TBH its sad that just as Kodak, Fuji and AGFA pretty much perfected how to make film digital came along and diminished their achievements. Kodak Park shown at the end of the film is still Kodak's headquarters and only film coating plant left but its nowhere near the size now, most of the film production buildings were demolished a few years ago leaving only one left for the production of still film (there is another for motion picture film as thats still used in hugh quantities along with most colour paper actually being made in Harrow UK! Although the site there is darastically smaller than it used to according to my dad, who remembers hugh fleets of Kodak lorries going past his school in the mid 60's to 70's)
Apparently they used to do a tour of how film was made at Kodak plant, but they'd deliberately take visitors around their oldest and least advanced coating machine so no one could steal their secrets! Unfortunately the tours stopped in the mid 80s, I would have loved to gone on one if they still did them.
14 tons of silver a week though....