Mantle Minerals GENERAL DISCUSSION, page-29

Thanks @galliumasian.

This is the only address given on the Company's announcements, and on their website as a contact address. The ASIC register just gives "Nedlands" as the registered office unless you pay their search fee. As far as I can tell this is their registered office, but you'd never know.

The Corporations Act Section 144 (2): A public company must also display its name and the words “Registered Office” prominently at its registered office.

I guess we long-suffering shareholders aren't entitled to know much anyway.