Development ore material is generally lower grade material that must be moved to access new higher grade stopes or during ramp development if you hit ore grade material or when driving new drifts or opening up new levels, etc. This material being stockpiled from the various mines as per the press release is definitely higher grade. The Santa Juana material referred too is probably from driving new drifts and during cross cuts for sampling, etc. as this mine has seen extensive exploration over the last year or so.

The gold pyrite concentrate is the material that the company has been stockpiling from processing in the sulphide flotation mill with a grade of 20-22 grams gold and 150 grams silver. This new mill allows the company now to complete the processing of this material and recover the gold and silver and reailize much more money, probably double, as opposed to selling it and getting docked penalties. There is 10,000 tonnes of this matertial in storgae and at least another 25,000 tonnes recoverable from the tailings pile awaiting processing in the flotation mill (this mill has been running this material for weeks now) before final processing in the new mill.