From BMK Assay Highlights, 1% copper ($60),2.5% zinc ( $40) and 15 gram silver ( $10) is a bit short of costs to process and be economical.
If it is not economical you can have billions of tons, it matters little unless you hope that some day prices will rise to make it economical.
Compare that to our resource which is several times operating costs so mostly profit. Yet BMK shows no change in sp ($0.195). If it was ours we probably would be at 1$.
Figure that.
Life is not fair.