Heap leaching is a cost‐effective, environmentally considerate method for extracting valuable metals from low-grade ores. This process involves piling crushed ore and irrigating it with a leaching ...

BHP Billiton has applied for government approval to build a demonstration-scale heap leaching plant at its Olympic Dam mine, as the company looks for more economical ways of expanding the South ...

Red Metal Limited has stepped up metallurgical work at its Sybella rare earths project in northwest Queensland, with large-scale weak-acid column heap leach tests now underway on coarsely crushed ...