What about the depth..... seams the additional depth did not make it into the calc either.
Simply reducing the cutoff from 30% to 20% has a marked increase in tonage this is evident by the reduction in average grade indicated on the 2nd resource est. The overall average grade reduced about 3% and would nearly account for the additional tonage on it's own. Seams to me like the additional holes only achieved moving more of the inferered into the measured and indicated.
This new resource estimate has been lowballed! Period!
JMHO