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Busan Transportation Corp. and its subway union failed to reach a final agreement in their 19th round of collective bargaining on Oct. 22, held at the Nopo depot, leading the union to declare a strike starting with the first train on Oct. 23. Maeil Business reports the talks broke down, and Yonhap confirms the union's strike declaration. Korean reactions are not detailed in the supplied documents, which focus on the negotiation breakdown and strike announcement.