Extract from Newcrest Document 19959 Oct 2021 11:31
This in an extract from a document that was at the time (1995) confidential, from NCM to the Department of Minerals and Energy, Period ending 31-12-1995
In summary, at Havieron, the 1991-1992 and 1995 drilling has succeeded in demonstrating the likely presence of a Large Gold-Enriched mineralised system hosting, at least in part, moderate-grade (10 - 15 g/t Au) + sulphide bearing hydrothermal breccia and vein type mineralisation, albeit beneath +420m of post-mineralisation cover. Given the high degree of difficulty of locating high-grade (20 g/t Au) structurally and lithologically controlled zones beneath such thick cover, it is reccommended that exploration of this prospect be deferred (but not forgotten) until other shallower targets in the Ankatell project area and the broader Telfer district have been tested.
So it looks like they already knew back then what was at Havieron. It does make me chuckle to think back then that they thought 15-20 g/t Au was only moderate grade and nothing under 20 g/t Au considered high grade. Oh how times have changed.
This document is 215 pages containing all drill hole data that was done on all the prospects around Telfer including
Havieron
Outamind
Prefect
Atlantis
Punchimup
Hairyone
Decka
Budgiedown
Havieron East
Eros
Prefect
Opal
Holden
I think this document would be right up Bamps's street. LOL
I have it in PDF version, but don't know how to send it via LSE if anyone wanted to peruse through it. It's a long read but very interesting. It even shows you metre by metre the results from the drilling logs at Havieron.