Cool find Debs. Here's one showing production of steel cylinders with the neck spinning Gordan mentioned and for anyone that's wondered what the inside of an acetylene cylinder looks like
FYI
Big satellite/microwave antennas (ie NOT Sky dishes) are spun too.
It's quite something else to see a 20m wide disc of ally plate belting round and slowly but surely being formed into a dish.
There's a company up the road who do this, I shot some video of the process 10 or so years back. Fascinating!