Hi RedHill Wings,
During my mob early years late 1962 to early 65 was spent on 4 JSTU at Edinburgh Field ,Adelaide as a fitter on Victor XL 161 carrying out Blue Steel test Drops over same Ranges. Although this was a later time than your uncle was involved,we did get spin offs from other personnel there about those trials times. One corner of our main hanger at Edinburgh Field was a white area with strange toilets and showers and rooms and this was where the Aircraft crews got de-contaminated. To my knowledge this was Canberra’s and Valiant Aircraft, but I have no other facts or figures, you have to remember we all were under UK Official Secrets Act and anyone found with notes or pics. or talking to media. really was in for a lengthy term of imprisonment once back in UK. I cannot remember where the Aircraft were de-contaminated, but the most likely place would have been down at South end of Airfield where there was a peri track connection to what was known as the “Submarine Blast Pens”. ( To us anyway ) that was surrounded by a hefty hawser netting fence. This was used for loading our Aircraft with “Blue Steels” but I’m sure it was erected long before we arrived there. It had a wash down facility, which was needed for us too in case of missile Fuel leakage. (Which it did ). I think this facility was removed/bulldozed after we left Aussie, as cannot see anything of it on Google maps.

Hope this is of some relevance for you.

Bill T.