Ann: Initial Results From Humaspunco Drilling, page-119

I think the write up told us some rationale “The reason for this may be related to a localised destructive effect on mineralisation of the subvolcanic. Metal zoning, whereby lead (Pb): silver (Ag): zinc (Zn) ratios alter as a function of distance from the source  of  the  metals,  may  also  be  a  factor.  Other contributing  factors  may  include localised displacement of sulphides by gangue minerals (calcite and barite) and the effect of weathering, where Zn, for example is remobilised and dispersed. None of these factors may apply elsewhere at Humaspunco.”
I don’t have really any geology knowledge, but it seems by chance/nature, these veins have strong grades at the surface (maybe why it was initially mined on the small scale), but frustratingly/unfortunately, taper off at the depth we got too.

I think one of the AA called the company a week or two ago, and the parting words where the money/market is in the assay results.  It seems this is true and goes both ways.

I know this is a slow game, but I really hope the company takes note that 3 months ago we were at almost 3c, and are now back under 1c, and they really try to target something that is going to have reasonable grades at depth for the next announcement (though, perhaps they are trying this already and the recent assay results were not what they were expecting).