http://www.outokumpu.com/en/Pages/default.aspx
Tornio Works History
This review was written by Mr. Jorma Kovalainen, General Manager – Special Projects. It describes the history of Outokumpu Tornio Works and our growth to the largest single site stainless steel producer in the world.
The Chrome deposit in Keminmaa was discovered in 1959 by accident, when there was a water canal under construction. Outokumpu got the ownership of the Keminmaa claim in 1960 and started to investigate the ore deposit and to develop a refining process for the metal.
The same year, Outokumpu engaged the first engineer (Siltari) to develop the idea of starting a stainless steel production sometime in the future, while Outokumpu already had some nickel production.
After extensive research and development work, Outokumpu decided in 1964 to invest in ferrochrome, and the production started in Tornio in 1968. A lot of research and development of enriching and metallurgy was needed because the chrome ore was in oxide form that was not refined anywhere else in the world. Similar development was earlier done with copper and nickel productions: in all three cases, Outokumpu has taken in use its own, patented production technology.