RE: RE: RE: Deposit rof. The July 4 2012 KWG PR reads as follows:
"At a 15% cutoff, the measured resource is 29.5 MT, grading 29% Cr2O3, the indicated resource is 7.9 MT grading 26.7% Cr2O3, and the inferred resource is 4.8 MT grading 25.0% Cr2O3.
The previous resource estimate prepared by Micon International (KWG PR, May 3rd, 2010) also modeled the deposit at a 15% cutoff and produced an indicated resource of 26.4 MT grading 39.37% Cr2O3. The Micon indicated resource corresponds to the Sibley combined measured and indicated of 37.4 MT grading 28.5% Cr2O3.
The lower grade and higher volume of the new model contemplates the use of a less selective approach to mining and incorporates lower grade material, resulting in a lower average grade."
The many meters of very impressive 35-40% Cr2O3 BD Chromite Ore DD cores made the possiblility of selective mining for the 1st yrs of production likely. This was based on reserve indications whereas now the measured reserves suggest rethinking selective mining to reduce overall mining costs and a concentrator to reduce overall transportation, handling & Ferro Cr treatment, etc charges. If BD contains Ni, PGMs, etc, the subject of selective mining will also take this into consideration.
Someone plse post Black Thor's Cr2O3 indications & measured reserves.