Tadeusz Sendzimir
Tadeusz Sendzimir (English: SEND-zim-eer; originally Sędzimir, Polish: [taˈdɛ.uʂ sɛɲˈd͡ʑimir]; July 15, 1894 – September 1, 1989) was a Polish engineer and inventor of international renown. He held 120 patents in mining and metallurgy, 73 of which were awarded to him in the United States.