Sad to hear they're demolishing some of these buildings after knowing what a hive of activity they often were.. the photos bring back lots of memories!
Also surprised they're demolshing them too, as a good portion of these were actually funded by NATO (meaning mostly US cash).
I think if I remember correctly, most bases had 2 distinct and independant HAS sites at least one of which I think would have been funded by NATO.. I think these were signified by a smallish NATO emblem on the doors.
The OPS room shelter that you're talking about was probably the Aircrew Shelter I mentioned previously.. assuming these are actually on the HAS site?
Edit:'
I'll just add, when entering one of these buildings when they were being used for their primary purpose.. assuming the 'NBC state was RED once you had gone through the entire decontamination routine, you were given a new NBC suit which you had to wear inside.. and in the event of an 'air raid', you had to don full gear including respirators even while inside these buildings with their solid concrete windowless walls and scrubbed pressurised air!l And youd sit and wait.. exercises were frequently based around long periods of tedium and discomfort :/