Arizona Eagle Mining has acquired 62 acres hosting the historic Arizona National, Lookout and Silver Belt silver mines in Yavapai County, Arizona, including an operating water well with extraction rights, extending its patented land to 410 acres. The ground lies on strike and about 1 km northeast of the McCabe gold-silver deposit, lengthening the mineralised structural corridor by 50% from 3 km to 4.5 km, where historic work defined 878,000 oz gold at 11.7 g/t and 5.12 Moz silver at 69 g/t. Surface and waste-pile sampling has returned up to 861 g/t silver and 15.6 g/t gold, pointing to high-grade underground exploration potential below historic workings limited to ~150 m depth.

Mining’s smallest bottlenecks – such as faster‑than‑predicted conveyor belt wear, poorly performing transfer points and uncontrolled dust escape – are identified as major drivers of unplanned downtime and reduced throughput in bulk materials handling. The Bulk Handling Technical Conference and Expo in Melbourne this September will focus on these everyday engineering issues, bringing together conveyor specialists, transfer chute designers and dust control vendors. For site engineers, the message is to prioritise condition monitoring and incremental design tweaks on belts, chutes and enclosures before pursuing large capital upgrades.

Autonomous Komatsu 930E haul trucks have gone live at Vale’s Salobo copper complex in Brazil, integrating with the mine’s existing high-throughput open-pit operation. In parallel, Vale Base Metals has approved a Coarse Particle Flotation (CPF) project at Salobo III, expected to add 6 Mt per year of ore to the plant’s processing capacity. The combination of AHS haulage and CPF will push higher tonnage through the pit–plant system, tightening constraints on dispatch planning, crusher feed control and tailings/water management.