Complex sentence: From 1963 to 1965 he worked as public relations director for the United Steel Workers of America in Sudbury, Ontario before returning to the Telegram in 1965 as the paper's "Action Line" columnist serving as an early consumer advocate.
Split into simpler sentences: From 1963 to 1965, he worked as public relations director for the United Steel Workers of America in Sudbury, Ontario. He then returned to the "Telegram" in 1965 as the paper's "Action Line" columnist, serving as an early consumer advocate.