installation of rail fastening. railway turnout mechanism. filming of the soviet-era children`s railway in the

installation rail fastening railway turnout mechanism filming sovietera childrens assembly concrete track road rusty sleepers metal gravel fixing transport bolt industrial washer repair mount screwed separation fasten sleeve spike stones construction terminal ties screw rails industry turn surface anchor steel painting clamping clip connection day attachment base pressing bonding double engineering check mound mortgage lining fasteners equipment park