If one ever had any question about whether management/supervision is "real" work, just listen to the accounts of how Nr.33, the Shift Supervisor, got them so tightly organized during the first 17 days before they were even discovered by the "surface dwellers", that those routines served to keep everyone on-track for the next two months.
Inspiring leadership.
Pretty inspired "followership" too, especially by Nr, 2 who brought up the rocks for El Presidente and the drilling crew.
The story of the small Pennsylvania company who fabricated the special drill in record time was a fascinating sidebar. As well as the President who wasn't afraid to ask for worldwide advice and assistance. And got it.
Lots of books and dissertations and screenplays will be written about this astounding exercise, a few by people who actually stick to the "facts" and know what they're writing about.