I think that you are misreading WowVeryJosh's posts. He is...

I think that you are misreading WowVeryJosh's posts. He is giving the volume of the purple body (wireframe) in his drawing. He did not present a block model. Notice that the thickness of the body is constant, even when there are drill holes with no intervals of mineralisation at all, or the intervals are are only a few meters thick. He extended the volume dept from end to end based on the one drill hole ANRD17. So, that 500m to the northeast and 500m to the southwest. That purple body volume is what he used to calculate 98.49M tonnes. I have no doubt his numbers are correct, but there is no evidence that the purple body all has ore grade mineralisation.