only 5 co's left if GLD under $1000/oz (if you ignore political risk)https://business.financialpost.com/2013/06/25/determining-which-gold-miners-will-outperform/
The analysts identified 19 precious companies in their coverage universe with projected output growth of between 20% and 300%. After applying a cut-off 2014 production cost of US$1,000 per ounce for gold and US$17 an ounce for silver, only five gold companies are left (Goldcorp, Yamana, Randgold, Osisko Mining Corp. and Centamin PLC). They pointed out Osisko and Centamin are risky calls because of low grade and political risk, respectively. That leaves only three picks in the gold space.