Ann: Opuwo Cobalt Project Maiden JORC Mineral Resource, page-228

Alright a few numbers since this seems quite topical.

We are told in the JORC our indicated resource is 72Mt and a maximum depth for the indicated category of 425m with a 10km strike. So working backwards we have 72,000,000/(10,000 x 425 x 2.9) = 5.84. So based on the data available this is what I think our average seem width is, which is a bit better than expected.

I think this is conducive to an OP design of 100m depth and a strip ratio of 8-9:1