Spazmund, This is my take on the exchange rates. BDR share price...

Spazmund, This is my take on the exchange rates. BDR share price is in AUD so convert costs and income to AUD. AUD goes down wrt the USD then gold sales go up in AUD. That's good. AUD goes up wrt to BRL then we use less AUD to pay for Brazillian expenses. That's good too. So the current exchange movements are both good.
Unfortunately there is a big bad shorter shorting the crap out of BDR 250k to 350k shares at a time 4 times today. I guess the shorter could just be a genuine seller but the effect is still the same. They seem to wait untill the bid queue builds and then savage it. So maybe that looks more like a seller trying to get the best price rather than a shorter trying to smash the price, but ofcourse, I have no idea and no experience in these matters.