I have seen many samples taken originally with an eye toward getting the highest grades possible, but later someone claims that those results represent an average grade of the whole gravel deposit.

The red dot on the diagram points out where the gravels there were also carrying, but not as much color. The gold was sparse below the point indicated.

The first requirement is permission from a land owner. This can be tricky and it’s always a bit nerve-racking to approach a stranger cold with such a request.