It all depends on the grade of they ore they process from time to time.
A batch (of ore) running 5 g/t for a week will see 464 oz
A batch running 7 g/t will see 650 oz in the same period.
Get higher grade ore for a whole quarter - an extra 2500 oz!!
Or an extra $4.2m in revenue (and no extra cost ie same tonnage throuh the mill)
