History of Nippon Steel Sumitomo Metals Corporation. Nippon Steel Sumitomo Metals Corporation (NSSMC) is the fourth largest steelmaker in the world, producing ~46 million tonnes of steel in 2016. The timeline below covers the history of the firm.. 1901: Start of steelmaking operations of Yawata Steel Works.; 1934: Japan IS formed from merger of several mines works.
History of Nippon Steel Japanese industry historic ...
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