MacKenzie began work in the Gold Commissioner 's office in 1904 ; in 1912 , he became the Gold Commissioner .
MacKenzie began work in the Gold Commissioner 's office in 1904 ; in 1912 , he served in that position until 1923 .
MacKenzie began work in the Gold Commissioner 's office in 1904 ; in 1912 , he became the Gold Commissioner and served in that position until 1923 .