Jan Czochralski (1885-1953) was a chemist and metal expert. He is the most cited Polish scholar. He began his career in a pharmacy to later work as the head of steel and iron research laboratory at Allgemeine Elektricitäts Gesellschaft.
He discovered metal B, which he patented in 1924. Six years later, he became a chemistry professor at the Warsaw University of Technology.
During World War II, he ran a Materials Research Plant to protect the university’s employees and equipment. The Plant worked for many civil institutions, including the Polish underground movement and… the Wehrmacht, products for which he sabotaged.