RE: Sulphide Zone SubeconomicWell, fwiw......and I prefer to defer to those with greater knowledge of ore bodies in remote regions: according to Brent Cook, this area of the Yukon will require a min 5 million oz deposit of non-refractory ore with a minimum grade of 4 g/t. Say what you will about Cook, but I've made some serious $'s on his research (one of the few NR writers out there with a geological background).