Soap Factory

I just had a look at this video on youtube:
https://www.youtube.com/watch?v=ietQhr4J7qE&index=794&list=WL
It is an urban explorer who go into an abandonned soap factory.  I like the video.  It is just sad that the soap factory was so empty.  It is a very old soap factory and it was pretty much bare when the cameraman visited the place.  It been abandonned since a long time and it show.  No material for soap making.  If there wasn't any mention in the title, I wouldn't have guessed it was a soap making factory.  It is really empty there.

It made me wonder.  What a more recent abandonned soap making factory would look like?  I would also like to compare that with an actual soap making factory.  I am curious about ordinary soap being made.  I saw some excerpt of Marseille soap being made.  They are stamped.  Otherwise, I am curious on how manufactured soap are made.  It is sure they are doing it in large quantity.  I know how small scale soap making is made, I have made a few batches (I am a beginner, btw).   I also made a lot of melt and pour soap.  Would like to see how it is made for the masses.  I don't know if it had been made.

New search for me to do.  I think I will start a list of research to do.  Would be more out of curiosity.  I doubt it would be useful for other creative projects.  It would be more a fun trivia to impart to others.