In December 2021 quarter the first sulphide stopes in both Happy Jack North and Bulletin mines commenced extraction with good recovery.
Stage 1 operations were in production as at the end of the June 2022 quarter with gold in concentrate successfully being produced onsite and shipped to China. Key activities for the June 2022 quarter included:
• Underground mine development and ramp up of stoping operations in the Happy Jack and Bulletin mining areas;
• Construction of the Wiltails tailings retreatment operation (not yet completed);
• Stage 2 and 3 Expansion Studies put on hold during the quarter due to escalating costs and industry wide labour shortages.
Subsequent to the end of the June 2022 quarter, WMC has continued with its production post the appointment of the voluntary administrators. Mining has been principally within already developed areas. There has been a reduction in development equipment from 10 August 2022.
The production method employed is long hole open stoping with in-situ pillars for local support, until the cemented paste fill plant is constructed, and paste distributed to the underground workings.
SULPHIDE DEVELOPMENT PLAN
The Wiluna Mining Centre is divided into three geographical areas, centred on underground mine portals and planned mining areas of the Stage 1 Sulphide Development plan. Mining is planned to commence at the Wiluna North Mine area via the existing Bulletin Decline, and ........
