| 1882 | Founded at Yokosu, Omuta Village as an affiliated factory of the Miike Coal Mine Branch of the Ministry of Public Works, engaged in the manufacture and repair of coal mining equipment |
|---|---|
| 1889 | Affiliated with Miike Coal Mine when management of the mine was transferred to Mitsui |
| 1896 | Plant relocated to Asahimachi, Omuta for expansion and upgrade |
| 1959 | Spun off from Mitsui Mining Co., Ltd. to become Mitsui Miike Machinery Co., Ltd. (Paid-in capital: 500 million yen) |
| 1962 | Capital increased to 1 billion yen |
| 1965 | Toyo Precision Press Kogyo Co., Ltd. established. Became pioneer in fine blanking processing in Japan Development of bucket wheel type reclaimer |
| 1966 | Completion of the first Road Header S40 |
| 1972 | Port factory completed in Shinkomachi, Omuta. Design and manufacture of material handling machinery |
| 1975 | Completion of the first planetary reduction gearbox |
| 1983 | Development of twin header |
| 1996 | Miike Works acquires ISO 9001 certification |
| 2005 | Integration of Toyo Precision Press Kogyo Co., Ltd., and Sun Mold Co., Ltd. |
| 2007 | Miike Works relocated from Asahimachi to Shinkomachi, Omuta. Name changed to Kyushu Works |
| 2011 | Development of seabed mining element testing machine |
| 2013 | Order received for the first small hydroelectric power generation system Started selling electricity by installing solar power generation equipment at Kyushu Works Installation of load testing system for wind power generator gearboxes Power Transmission Division at Kyushu Works acquires ISO 14001 certification |
| 2014 | Order received for coal handling system for Vostochny Port, Russia |
| 2015 | Fine-Blanking Industry Division at Kanagawa Works acquires ISO 14001 certification |
| 2016 | Extension and major renovation of Hayamaryo, a singles' dormitory in Omuta |
| 2019 | 60th anniversary of establishment |
| 2020 | Completion of Kyushu Works Technology Development Center |
| 2021 | Kanagawa Works new factory completed |
