However, in 1970 the headquarters of Chubu Area Development and Improvement (中部圏開発整備本部) announced the termination of the survey after the loss of key members of the alliance: ONO, the vice-president of the Liberal Democratic Party, and HIRATA, the mayor of Yokkaichi City, had both passed away, while KITA, the governor of Fukui Prefecture, and the mayor of Tsuruga City, HATAMORI (畑守), continually lost in the elections.
しかし、大野自民党副総裁、平田四日市市長の死去と、北福井県知事、畑守敦賀市長が相次いで落選するなど、推進の中心人物を失い、1970年には中部圏開発整備本部が調査の打ち切りを発表した。）。