Thanks again for the info Sack.Further to the points you made...

Thanks again for the info Sack.

Further to the points you made and perhaps just a little a small query, (maybe I am little confused about this) it would appear that Herald consider there zinc of P80 of 15-20 microns of type 'Medium Coarse' and not a finer type concentrate. If as you say, Perkoa's concentrate is a greater coarseness than that of Heralds then this insinuates that indeed Perkoa does have a very saleable and sort after type concentrate.

Just to further add, a coarse particled concentrate will require less processing and therefore require less energy (diesel) to mill, so that has to be a positive too.

cheers again Sack,
Crosy