paul drumaux received from the university of liège a degree in mining engineering in 1905 and a degree in electrical engineering in 1908. in 1907 drumaxu became a supervising engineer at belgium's ptt (post, telegraaf, telefonie) and in 1919 a docent at ghent university. he was an invited speaker of the icm in 1932 in zurich and in 1936 in oslo.