This is not an operating mine.
You can't have an operating mine without a feasibility study, and you can't have a feasibility study without a pre-feasibility study (or the equivalent work). For several reasons.
First, a feasibility study determines not only if gold mineralization is present, but most importantly, if it is economic to mine.
Second, you need the feasibility to raise the funds required to build the mine and related infrastructure. It is called a "bankable" feasibility study for a reason - no one will finance without one.
And third, and perhaps most importantly, you can't get the permits required to build and operate a mine without one. They always include the studies on contamination and how the mine will not only handle the waste and dangerous chemicals used in processing, but how the mine will be reclaimed and closed when the economic ore is exhausted. No study, no permits.