Firestone selects AmmLeach process for its Torlon Hill zinc-lead-silver oxide project in Guatemala

Alexander Mining and Firestone Ventures have announced that Firestone has decided to advance investigating the use of AmmLeach® at its Torlon Hill project in Guatemala. Firestone is in discussions with Alexander on proposals for further bench-scale work, column testing and a demonstration test plant designed to asses further the application of the AmmLeach process. This follows on from Firestone’s extensive preliminary metallurgical test-work on the Torlon Hill deposit using a variety of methods. (more…)