This stuff is ancient but I hope that it wasn't posted here before:

The construction of the Japanese Shinkanzen high-speed rails, form 1964.
https://www.youtube.com/watch?v=iYjFOYLAtoE


Both the footage and the tempo if that of the '60s, so do NOT expect some twitch footage and on point editing.
But, I think you all would appreciate it, or - at least - should see this!

ps: use auto-subtitles. While at some point it it definitely an 'eh', it is better than nothing.