IGS Project Gold Tailings

I did a google search over the IGS project area and it appears that within the tenements their is a massive (millions of tonnes) of old garimperio gold tailings material there !

This material would be at least 1g/t gold given these miners only look for course gold !

Why isnt there a study on this tailings material that would make a huge "heap leach" project and generate early cash flow ???????

Is IGS the 3rd version of the movie dumber and dumber ??