shadowboxer, if those blocks are as you say, they are about 227 t each: 2.5x2.5x12.5 = 78.125cu.m., x 2.9 = 227t.
But going by the drill results, the high grade area is about 60m by 20m, or 40 blocks at an average of 11% for the rich stuff gives 227x40x.11 = 997t, x $5,500/t = $5.5m.
That's a rough price for concentrate, not DSO.
Depthwise, there is about 50m to 60m max at those grades, 20 to 24 "layers" for about a $100m in revenue from the richest part of LM, as far as I can tell.