OK here's my 2 cents worth.
Back many years ago
when I first started as a technician at a defense
contractor I was on evening shift (3:30 to 12:00). A
couple nights after starting there I was offered a tour of
the machine shop area. After being led through the lathes,
milling machines and other work stations, we went to the
iriditing and painting area. The sandblasting box was
pointed out to me and I was encouraged to look into it
through the glass plate in the top. As I bent over to
look, suddenly arms were thrust out of the box through the
rubber gloves that were attached and grabbed me. Liked to
scare the crap out of me!!!
From that day on, I
delighted in being onhand for the next new guy being
generously offered the same tour. It was always the
highlight, and it always worked!