Glass fibre is made into material to be used in insulating blankets and wadding.
Location of events unknown.
M/S as glass pieces are tipped out of a sack, two women smash them up into very small shards with special crushing tools. The pieces are put into an electric furnace and the resulting white hot threads are wound onto drums then cut and tied. M/S as a man carries off a sheet of the fibres. The silk like sheets are then spread on a table and trimmed around the edges. They are covered with muslin and stitched into insulating blankets and wadding. Four female workers hold up the wadding for the camera.