As on 2023, the Edna May production centre includes the Edna May underground mine and open pit the Tampia, Marda and Symes Gold Mines.
Edna May underground
Edna May Underground mine mining method involves uphole open stoping without fill.
In mid-June 2023 a temporary escalation of water inflow, that was higher than the installed pumping capacity, led to higher water levels within the mine. Development works had taken place at these lower levels and at 30 June 2023 it was uncertain as to whether access to these lower levels, and the benefit from this development work undertaken, would be feasible.
The lower levels of the underground mine are being monitored and if conditions permit, and access is economically feasible, development deeper into the mine will continue to the 840mRL and 820mRL and ore may be extracted from these levels.
This water ingress event will not materially impact the production and cost guidance for the 2024 financial year.
Tampia
Open pit mining methods for open pit resources use 90t rigid dump trucks and excavators of 120 to 200t operating weight. Generally a minimum width of around 3m is assumed for open pit.
Mining operations were completed at Tampia in May 2023, slightly ahead of schedule, with the mining team and infrastructure at Tampia relocating to the Symes Gold Mine, which commenced in July 2023.
Open pit mining methods for open pit resources use 90t rigid d ........