The commissioning of a rod mill and installation of a new ball mill motor is also expected to reduce unit processing costs and improve cash flow.
Refurbishment of the rod mill was completed by the end of the December 2019 quarter with commissioning held over during the new year crossover period.
This mill has now been successfully commissioned, providing 20% additional grinding capacity and throughput.
Further optimisation of the milling circuit is underway.
The Wiluna Mining Centre is close to the town of Wiluna, 750 kilometres northeast of Perth
New ball mill motor
Following a mill motor failure in September 2019, which disrupted production for several days, the company recently received a newly constructed mill motor that is now installed at the site.
The previously reinstated original mill motor had caused some throughput restrictions, particularly as a result of its inability to operate in the normal high temperatures experienced during summer in Wiluna.
Blackham is also assessing its short to medium-term planning in the prevailing record Australian dollar gold prices, which have been sustained for some time.
The company anticipates that the current economic environment should provide further opportunities to take advantage of its inherent operational flexibility at the Wiluna operations during the transition to sulphide operations.
Blackham has also recently implemented additional hedging activities, with gold forward sales contracts being for 6,000 ounces at an average price of A$2,328 per ounce maturing by April 30, 2020.
The company also has additional revenue protection via Put Options, which provide Blackham with the right (but not the obligation) to sell 20,000 ounces at a minimum price of $2,018 per ounce between February and June 2020 inclusive.