Oh dear I know you know this but.. MAN are using heaps of HISTORICAL DRILL CORES hence it will be indicated and JORC compliant because estimated is not a JORC compliant resource.
And MAN have clearly stated they are set to release a JORC compliant resource from historical drill cores and data . Fact froggy as you know
That is clever prudent and conservative and I guess just very lucky they got hold of these historical drill cores.