Dainippon Koki Co., Ltd. (Taihei Kogyo) - Shinodayama Plant

Taihei Kogyo Co. - Shinodayama Plant

Shinsei Kogyo Co., Ltd. - Plant Accountability

Taihei Kogyo K.K. (Mitsubishi Mining Co., Ltd.) (File #274)

Dainippon Kikai Kogyo, Aoto Plant

List of Authorized Use - Nippon Kentetsu Kogyo Co., Ltd. Nakagawa Plant

Kyushu Shipbuilding Co., Ltd. - Plant Accountability

Fukuoka Seikosho Co., Ltd. - Plant Accountability

Kanegafuchi Spinning Co., Ltd. - Amagasaki Plant

Fukami Sanko Co., Ltd. - Plant Accountability

Nippon Typewriter Co., Ltd. - Kema Plant

List of Authorized Use - Nisshin Industry Co., Ltd. Itabashi Plant (Kakuwa Kokuki Kogyo K.K.)

List of Authorized Use - Oi Plant, Nippon Kogaku Kogyo K.K. (Japan Optical Industry Co., Ltd.)

Nippon Chemical Industry Co. ,Ltd. - Plant Accountability

Chikushi Industrial Co., Ltd. - Kashii Plant Accountability

Kyushu Tekko Co. Ltd., Zasshonokuma - Plant Accountability

Nippon Chemical Industry Co. Ltd. - Plant Accountability

Fujiidera Mfg. Co., Ltd., Fuji Katan Chutetsu Co., Fujisawa Manufactory, Fukui Koki K.K

Nippon Tire Co., Ltd., Kurume Synthetic Rubber Plant - Plant Accountability

Taihei Kogyo K.K., Kogyo Kenkyujo (File #273)

Kansai Sulphuric Acid Mfg. Co., Ltd. - Amagasaki Plant

Toyama District Railway Co., Ltd. (Non Reparation Plant)

Osaka Forging Co., Kokoku Ind. Co., Mitsubishi Mokushitsu Kogyo K.K. - Chishimacho Plant

Dainippon Boseki, Tokyo Plant

Yamamoto Chuzo Co., Ltd. - Mitsubishi's Dispersed Plant - Concentrated to Tsu Plant