Goblin Ha' Staff Party

I've got quite a few names for the faces in this photograph but please let me know if you can provide more information.
What year is this?

So far I've got, Pauline Cox, Ray Young, Mike Beaman, Douglas Muir, Kirsten Muir, Irene Kuhill, Shona Brotherston, Aileen Fairgrieve,
Mrs Charlie Brown (help!) James Grindley, David Grindley, J Rutherford, Mary Renton, Ella Bisset, Alice Johnston
Margaret Young, Nancy Douglas, Johnny Grindley, Susan & Max Muir, J Mason, Mary McGough,
Charlie Brown, Jen Wood, Jimmy Renton and Margaret Grindley.

_{©Gifford On-Line 2003 - Date}