Wombat the old guy that told me all this stuff was quite well known and quite a shady fella that you wouldn't want to cross in his early years. He was in big with the Bjelke Petersen government and the QLD Police but somehow he was imume from prosecution during the inquiries into such. Others knew of these mine shafts and dumpings but it was 'Big Johns' job to keep track of every item and make sure none was available to fossickers or the likes. The mine shafts have been flooded bigtime at least 2 times so any chance of nice stuff still sealed in grease wrap just wouldn't happen. I never heard of planes going in there, it was mainly, generators and camp equipment but there were some bikes, some artillery and some jeeps. The whole of Nundah hill here is a maze of underground shafts. When the govt. decided a tunnel was needed through Nundah they discovered all these 'voids' and had to sink footings down at 150metres before solid footing were found. They were worried the entire hill shopping centre could cave into these shafts and it was Big John who was called in to draw a map of all he could remember before the sealing of the mine took place. Back in the 20's there was not a lot documentation to map these mines and by the mid 40's any info on such was lost and today this story is passed off as myth but I can tell you, I researched and every little detail this old guy told me held true, it also surprised some historians who had heard of such incidents but never knew the truth, the truth died with these 2 old blokes. No doubt there maybe records in the US but for what would be left I doubt it would be of any use.