Brick laying according to a new technique developed by the construction department of CIT: brick is fed on special frames; workers prepare the mortar at the bricklaying site; the laying is done by 3 people. Workers of the state farm garden set fire to a pile of litter, smoke bombs to smoke the garden, which helps to trap heat vapors during frosts. The formation of fog from an airplane in the Lyubatinskiy garden plant. Shallow sectional self-propelled vessel (designer A. A. Parakhovshchikov). Design features of the vessel. USA. Thermos for transporting molten metal: a stream of molten metal is poured into a thermos, thermos are transported by rail.