With 8 more NS cars added I have more than enough freight cars to operate Valkenveld Industriespoor according to the "Inglenook" rules. The operational fun can begin!
Full house. All tracks occupied to their max with all my current rolling stock (except for the self-unloading hoppers). This image also demonstrates the correct length of tracks for an "Inglenook" yard: track 1 in the front can hold 5 cars, tracks 2 and 3 can hold 3 cars each. The yard lead to the left (not visible) holds a locomotive and 3 cars. To play "Inglenook" 8 cars are needed.