Kuniko Limited, page-427

I own VUL and didnt take up this offer.
what i dont get, fundamentally, is what does zero carbon mining look like.
With VUL, their process of extraction is the key.
With these 3 old mines, how are they going to do it?
I see that they are interested in the tailings ( at the cobalt one), which are already above the ground, but even so, how do you power / process masses of old ore with zero carbon?
Are they riding bikes up the mountain and digging by hand?
Are they building a solar array next door, and using electric powered tools?
Can someone who has dived a bit deeper into this explain it to me, i just dont get it.