Strikes, severe weather, accidents and geotechnical issues are putting an average 5.2% of output at Chile’s 14 largest copper mines at risk, with GEM Mining Consulting’s new Production-at-Risk Index scoring El Teniente at 9%, Los Pelambres at 8% and Escondida at 7.5%. The model compounds eight disruption categories—labour, water, weather, geotechnical, metallurgy/grades, ramp-up, safety and permitting—where a single high rating equates to an expected 3% annual loss, or about 11 days of production. Current events validate the exposure, with over 700 workers on strike at Centinela, Escondida halted after a fatal accident, and storms disrupting Los Pelambres and Caserones.

MACH Energy has pledged to continue operating its Mount Pleasant thermal coal mine in the NSW Hunter Valley in line with the legal framework set by the High Court’s ruling on its proposed expansion and any subsequent NSW Parliament decisions. The company is signalling ongoing engagement with state regulators, government and local stakeholders as it reassesses plans to increase production and extend mine life. Geotechnical and mine planning teams can expect permitting, design envelopes and progressive rehabilitation schedules to remain contingent on evolving court and legislative constraints.

Barton Gold has completed assays for its Tunkillia resource‑upgrade campaign in South Australia, returning broad, high‑grade gold intersections within the proposed starter pits. Final results include 53m at 2.51g/t Au from 60m in hole TKB0745, with higher‑grade zones of 2m at 18.25g/t from 72m and 1m at 26.3g/t, plus several similarly mineralised intervals. The data support potential early pit designs focused on thicker, near‑surface mineralisation, improving options for initial strip ratios and mill feed grade scheduling.