Toronto-headquartered Kerr Mines expects to receive the final permit for Copperstone – a past-producing mine that it is bringing back into production – in the “coming weeks”, the company has reported.
Kerr applied to modify the existing mine plan of operations (MPO) at Copperstone, in Arizona, US, which will increase allowed gold ore production from 450 t/d to 600 t/d, as well as authorise the use of cyanide for recovery of gold from ore.