Thanks TigerTen,
Found this...
http://dbforms.ga.gov.au/pls/www/geodx.strat_units.def?strno=37623&stratname=Geolsec%20Formation
The Buckshee Breccia is now called the Geolsec Formation.
Hopefully be able to merge a map with the tenements of RSL to see where the connections/locations are.
One of my background supporters who is very knowledgeable in the mining industry has already located a map of the Geolsec Formation for me.
Cheers,
Tangrams