Saihei Hirose (June 16, 1828 – 1914) was a Japanese mining businessman and former head of the board of directors of Sumitomo Zaibatsu from 1877 to 1894.

[1] Prior to that, he was manager of the Besshi Copper Mine, which he extensively modernised using Western technology.

[2][3] There is a museum dedicated to him in Niihama, called the Hirose Memorial Museum.

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