Survey of Energy Resources 2007
Uranium Country Notes
Exploration of the Zirovski Vrh area began in 1961, followed some 20 years later by the commencement of mining and eventually by the production of yellow cake in 1985. Exploration expenditure ceased in 1990 and uranium production came to an end two years later, with cumulative output of 382 tU.
The reported in-situ uranium resources are fairly modest: RAR of 2 200 tU and IR of 5 000 tU, both recoverable at under US$ 80/kgU, plus 5 000 tU of IR and
1 060 tU of PR, both of which are deemed recoverable at US$ 80-130/kgU. The Red Book estimates that 55% of the Identified Resources (RAR and IR) would actually be recoverable.