Klyon wasn't economically feasible to mine as quickly as the Russian Government's license required - too much up-front developmental costs. So the Aurus Russian managers - being the professional miners the Canadian "promoters" were not, made the wise decision to forgo the property and seek to initially work on more economically viable projects - Krong's pyrite tailings.... VERY EASY to extract the IRON from the mountains of ore tailings...
Sorry, no "mystery" Benz. Just wise business decisions.