Kata Kunci Pencarian:
- Polonium
- Plutonium
- Japanese Federation of Chemistry Workers' Unions
- Japan Federation of Energy and Chemistry Workers' Unions
- Japanese Federation of Synthetic Chemistry Workers' Unions
- All Japan Chemistry Workers' Union
- National Federation of Cement Workers' Unions of Japan
- Japan Confederation of Petroleum Industry Workers' Unions
- National Organization of All Chemical Workers
- Japanese Federation of Chemical Workers' Unions
- Japanese Federation of Chemical Industry Workers' Unions
- International Federation of Building and Wood Workers
