26F 21-04: Kumamoto Iron Works

Yoshida Iron Works

Tagiri Iron Works

Tabuse Iron Works

Tajima Iron Works

Ikegami Iron Works - Chiba

Otsuka Iron Works, Ltd

Kurimoto Iron Works - Sumiyoshi Plant

Reparations - Okada Iron Works - Ehime

Fukuoka Iron Works - Plant Accountability

Toa Iron Works Co. - Wakae Factory

Maeda Iron Works Union Contract - Nagano

26A 21-01: Mitsubishi Jukogyo - Kumamoto

Japan Iron & Steel Co., Ltd. Kamaishi Works

Kubota Iron & Machinery Works Ltd. - Sakai Plant

Eleventh Aeronautical Arsenal Laboratory (Naka Iron Works)

Kamimura Iron Works (20-01) 1946, Kochi

27B 21-06: Sanyo Enterprise - Kumamoto Plant

Toyo Keidai Kokan Seizosho, Kubota Iron & Machinery Works - Fuse Plant, Kurimoto Iron Works - Fukae Plant, Condor Sewing Machine Co

Kamimura Iron Works (20-01) 1947-48 Kochi

Kuwahata Electric Engineering Works, Kyokuto Seisakusho, Kusuda Chukosho, Kurimoto Iron Works - Kagaya Plant

New Hokoku Iron 98-012-04

Daini Kubota Iron & Machinery Works, Ltd. - Marine Engine Shop

Foundry Research Laboratory - Kubota Iron & Machinery Works Co. Ltd

Plant Accountability - Code Nos. 21-04, 21-05, 21-06, 21-07