Eastman earned his living as a tinsmith (or "tinner"). The mixer with rotating parts was patented in 1856 by Baltimore, Maryland tinner Ralph Collier. Friedrich Tinner was born in Bern, Switzerland, in 1936 to a Swiss family. Throughout this time, Tinner kept close contact with Dr. A. Q. Khan. He also learned the trade of being a tinner. The centrifuges materials and expertise were provided by Swiss national, Friedrich Tinner. This may have been the work of the tinner. Libyan revelations also led the arrest of its former head of the program, Friederich Tinner. McGowan graduated from tinner to hardware manufacturer, and eventually established a foundry in Houston. In 2000, Libya accelerated its efforts, still headed by Tinner. Tinner and Dr. Khan were college friends in Belgium where they studied together. In 2000, Khan provided sensitive centrifuge designs to Tinner on gas-centrifuge method. Tinner and Khan studied at "Leuven" and stayed in a same dorm room. He was a tinner and then was involved in the hardware business. His brother, Marco Tinner, was also in custody for three years on similar charges.