600 cost an ounse could mean  0,31 if mine is fully / 100% up and running    

QR Mine and Mill (dore a week 400, 360 pure AU, 1 shift)    
two 12 hour shifts (news 18 Jan 2013)        
production
per week
weeks year cost gold profit pre all per share
(110 mio)
660 52 34320 600 1600 34.320.000 0,31
660 52 34320 900 1600 24.024.000 0,22
660 52 34320 1000 1600 20.592.000 0,19
660 52 34320 1100 1600 17.160.000 0,16