(I haven't heard that one for a while - there can't really be any factories still using pre-war machinery).
Want to bet? I know of at least one place where they are still using a punch press that has the manufacturers metal label on the front, stating it was produced in 1931. It's still being used pretty much every day. It just hammers away, then when finished, they remove the dies, clean and sharpen them, then refit ready for the next morning.