copper mining

Ernest Henry’s bold cave reorientation boosts productivity, tames seismicity, and sets new benchmark for deep underground mine design

When mining engineer Eddy Zhang took the stage at the 2025 AusIMM Underground Operators Conference in Adelaide, he was candid about the task at hand: “Today I’ll be presenting learnings from reorientating the Ernest Henry sublevel cave.

Sleeping giants awaken: How Ernest Henry set a global benchmark for firing overslept rings in SLC mining

When a major weather event halted production at Evolution Mining’s Ernest Henry Operations (EHO) in March 2023, it set the stage for a remarkable operational comeback that would go on to earn Matt Bouwmeester the Best Paper of the Conference award at the 2025 AusIMM Underground Operators Conference in Adelaide.