Henry,
Yes psp (pierced steel plate?) was still around in the Far East in the early '60s and that part of the 'western dispersal' in that photo would be left over from the original east-west runway that the prisoners-of-war built for the Japanese at Changi.
It was cleared away from the other side, the eastern dispersal, where 205 (Shacks) and Kiwi 41 Sqdn (Freighters) were during mid '63 for the arrival of 215's Argosys. The other parts of the base followed shortly after.
It could get damned hot in that sun!
DT