We have 9 reminders of factory scenes, sports day reminders, fundraising and the day an important visitor did a tour.
Perhaps you are pictured or you can spot someone you know. We would love to hear from anyone with memories of working at the factory.
Which part of Plesseys did you work in and can you remember the friends you made.
Take a look through our photo collection and then get in touch to tell us more.
5. Staging a walkout
Some of the 1,000 Plessey workers, South Shields after staging a walkout in 1970. Can you spot someone you know? Photo: Shields Gazette
6. Big on fundraising
Employees at Plessey Telecommunications factory used the money they collected to buy toys for children in need in 1974. Photo: Shields Gazette
7. A new addition in 1969
The Plessey 5005 Crossbar telephone exchange equipment was pictured being assembled at the Company's new £500,000 factory at South Shields in 1969. Photo: Shields Gazette
8. The day the Mayor paid a visit
The Mayor and Mayoress of South Shields, Ald and Mrs A M Southwick, during their visit to the Plessey factory at Laygate. They are pictured with D G Booth,right, regional general divisional manager, and P Bourke, a solderer at work in 1969. Photo: Shields Gazette