Now, I will have to go looking, or someone else may have it at hand, but if I recall, the diamonds at the old Rio pits react differently to wavelengths of light that what RIO (and other diamond miners) were using, so hence MED have used a different wavelength to detect the diamonds... hence why there have been finds that RIO didn't "see".
Does someone have access tot he document that talked about this?
MED Price at posting:
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