I don't know why you are saying that the cc refused to provide info. That does not really need to be discussed here. Most of the bunker articles that I wrote were made possible because because I learnt about these sites from the guy that is in charge of new members. Some members had a lot to tell, but lets not worry about that. The explanation for the Bankstown Bunker photos is on the talk page for that article. I was never blocked for this, check my block logs for both websites. 

I have provided new refs. The cc removed the information about the Darling Harbour drain because of this situation. The first ref is a hard copy, so go and find your own. The second ref covers some of the information in part.