There are a few things I'll list :- 1) Positive mineral sands or drilling news 2) A certain someone has had all the legal operations finalized in the recent purchase and is obtaining more while MKR is under ~120M market cap. 3) Better financial arrangements obtained (GOVT + debt) 4) The latter part of the stockpile is doing way better than the start, which given the the fact it has sat there for ages and has had lots of rainfall in that time it would have sluiced itself down through natural processes. AUD silver price is 31-32 recently, over the ~27 for a profit at the estimated silver per tonne at high throughput, and if the latter part of the stockpile is double or triple the estimated ounces they will be making a few million in this last quarter easily. But if you put that in perspective the average of the stockpile could still be what was estimated, it is just for 6 months they got low numbers and now they get high numbers.
