Original occupation text
In 1923 Rogers joined the Vacuum Oil Co. Pty Ltd. After being employed as head chemist (1924-29) in Sydney, he held increasingly senior management positions in Western Australia, New South Wales and Victoria.
Source Details free text
Neil James, 'Rogers, John David (1895–1978)', Australian Dictionary of Biography, National Centre of Biography, Australian National University, http://adb.anu.edu.au/biography/rogersjohn-
david-11555/text20619, published first in hardcopy 2002, accessed online 19 January 2018.