it is my understanding that anyone with a valid reason can...

it is my understanding that anyone with a valid reason can request a shareholders list from the company at anytime, also any 100 shareholders can call an egm to spill the board and any shareholder with at least 5% of the total shares on issue can request a financial report on the company after it is over 1 year which it is now and the report can exclude some matters but must be audited dyor.
I would suggest that MELB-MINING go this route to contact shareholders so as to be professional if serious on proceeding.
whilst I don't like what has happened to CSD ,i also believe that with the amount of money CYAN has poured into trying to resurrect the company that at this point the only option for shareholders is to see this through and hope for some form of conclusion that will see a return of their investments in some form.