From 1950 to 1957, he served as the Minister of Mines and Technical Surveys in the ministry led by Prime Minister Louis St. Laurent. He did not seek re-election in 1957. After he stepped down from federal politics, Prudham served as an alderman on Edmonton City Council from 1959 to 1963.
From 1950 to 1957, he held the position of Minister of Mines and Technical Surveys in the ministry overseen by Prime Minister Louis St. Laurent. He did not seek re-election in 1957. After leaving federal politics, Prudham served as an alderman on Edmonton City Council from 1959 to 1963.