WestGolds Underground Mines Open to 1300 mThat's Big Bell.
The other three are now mining between 330 m and 550 m below their open pits.
Note that the adjacent open pits have basement lodes yet to be developed.
Murchison has over two dozen open pit mines all of which with basement lodes.
NOA 8 is the deepest todate at circa 200 m and open at depth and laterally ...
A major source of future mining, relatively untouched todate..
https://www.westgold.com.au/site/pdf/ce731f86-c550-4262-83bd-0a6152575b67/Red-Cloud-PrePDAC-Mining-Showcase-Presentation.pdf