From Slide #9 >>>It is possible that a lot of attention may have been diverted to achieving some of this goal earlier while the dike was being grouted up.
"Construction of E2 surface decline would also improve the independence of the 3 mining areas"
https://nevadacopper.com/site/assets/files/4209/2021-03-ncu-cp.pdf
Cheers,
Notgnu