Any officers who were serving when HQ mast was erected in the late 1960s?

Do you know any Durham Constabulary officers who were serving when our mast was erected in the late 1960s?
The communication tower, which is a listed structure, will soon make the short journey from its place at the old headquarters to our new HQ just along the road.
The mast was built and designed by Sir Ove Arup between 1965 and 1968. Arup was also responsible for the Sydney Opera House and the Pompidou Centre in Paris.
We are keen to try and find some of former colleagues to invite them to our new HQ to watch the mast being moved.
Please email :  media@durham.pnn.police.uk