Education
Born in Middle Swan, Western Australia, he was educated at state schools before becoming a labourer and railwayman, as well as an official with the Australian Railways Union.
Born in Middle Swan, Western Australia, he was educated at state schools before becoming a labourer and railwayman, as well as an official with the Australian Railways Union.
In 1943, he was elected to the Australian House of Representatives as the Labor member for Swan, defeating sitting member Thomas Marwick. Mountjoy died in 1988.
He was defeated by the Country Party"s Len Hamilton in 1946, but later that year was appointed executive member of the Commonwealth Scientific and Industrial Research Organisation, where he remained until 1949.