My feelings
I believe it's about reserves, but these guys are very conservative in every respect..
Many Canadian Miners working in the same areas have never given more than 2-3 years of reserve life, but have managed to produce for many, many years more.
My belief is that both Kiena and Eagle River have lots more reserve years than indicated.
Hopefully Dubuisson and the Ontario properties will be very prospective. i wonder what they plan for the interest in Moss Lake?