[2] A pharmacist by career, Mooney owned and operated City Drug Store in downtown Yarmouth, Nova Scotia for over 50 years.
[10] In an August 1973 cabinet shuffle, Mooney left the tourism ministry but kept the Municipal Affairs portfolio, as well as responsibility for the Liquor Control Act.
[2] In June 1980, Mooney ran for the leadership of the Nova Scotia Liberal Party, finishing third at the convention that elected Sandy Cameron the new leader.
[12][13] Mooney was re-elected in the new single-member riding of Yarmouth in the 1981 election, defeating former Progressive Conservative MLA Benoit Robichaud by 479 votes.
[16] Mooney made another political comeback attempt in 1994, when he challenged incumbent Charles Crosby for the mayor's seat in Yarmouth.