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- Recovery of gold from arsenopyrite concentrates by cyanidation-carbon adsorption
- Improvements in heap leaching to recover silver and gold from low-grade resources
- Agglomeration-heap leaching operations in the precious metals industry
- Agglomeration and heap leaching of finely ground precious-metal-bearing tailings
- Production of high-purity gold from zinc precipitates and steel wool cathodes by hydrometallurgical refining