1. Oita R&D Lab., Nippon Steel Corp., now Oita Works, Nippon Steel Corp.
2. Oita R&D Lab., Nippon Steel Corp., now The Japan Research and Development Center for Metals
3. Steel Research Labs, Nippon Steel Corp.
4. Oita Works, Nippon Steel Corp., now Plate Sales Div., Nippon Steel Corp.
5. Steel Research Labs, Nippon Steel Corp., now Technical Development Planning Div., Nippon Steel Corp.