Item title reads - Hot Cold.
M/S of heavy machinery and big wheels in factory which makes artificial ice. Containers are filled with water and lowered into bath of freezing salt and ammonia. The water freezes and the blocks are brought out by a crane arm, the blocks are then dipped into water...
Strange look at gears and cogs in close-up.
Soundtrack only; visuals missing.
A farmer tills his field with a new tractor-tiller.
A new machine paints the white lines down the middle of the road.
A very large telescope located on the top of a building is demonstrated.
Eggs are checked and graded at factory. Location of events unknown.
An old fashioned sewing machine is compared with a new one.