"peak" grades mean nothing, you can have a "peak grade" of...

"peak" grades mean nothing, you can have a "peak grade" of 20,000pm or 1%, but that may be over 20cm, the average grade of the whole is 150ppm. this may mean some holes will be below, and some above. Also the grade tails off towards the edges

i suggest ERN look for higher grade zone's, possibly calcrete. This will do the job they need of simply getting into production.

I have kept my ERN holding low because I need further evidence of improvement in grades/size of resource.