Looks like the metallurgy testing may have come up ok, that's assuming one can trust what one reads online!
http://limun.hr/en/main.aspx?id=778973
Australia's Sultan Corp Eyes Restart of Idled Montenegrin Mine Brskovo in 4 Yrs
Australian mining company Sultan Corporation expects to re-open idled Montenegrin mine Brskovo within four years after verifying zinc, lead, copper and silver deposits there, local media reported.
The deposits at Brskovo, in the northern municipality of Mojkovac, were confirmed following three months of exploratory activities, broadcaster RTCG (www.rtcg.me ) reported on Thursday, quoting company representative Milijana Maras.
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