Recycling of industrial waste in the recycling shop of the Lyuberetskiy plant of agricultural machinery. Manufacturing of building materials from sawdust and shavings. Nizhny Tagil. Granulation of slag, which is a waste product in this smelting: the molten slag is cooled by a strong stream of water; the slag solidifies into small pieces that can be used in the production of bricks, slag cement and road surfaces Demonstration descent of a huge parachute for several people (foreign chronicle).