http://www.amex.net.au/ The Company did one years ago and could probably direct you to the relevant announcement. It was reported to be very robust and for a number of reasons I believe it will be corroborated once production begins.
Week 46 Wrap: Copper hits 2mth low as Trump threatens net zero pace; US rally fades; HotCopper’s picks
AN1 CuFe sells its Crossroads gold royalty to Northern Star for $4M cash; says better than waiting for mine launch