Coronet Metals has issued a news release regarding their testing of the EnviroLeach solution (X-leach) for its gold-bearing tailings and dumps in Nevada. Again, more validation of the X-leach. Remember, Iberian has a full licence for the X-leach solution to advance projects such as Coronet's.
https://www.stockhouse.com/news/press-releases/2017/02/02/coronet-announces-hydrometallurgical-results-on-tailings-and-dumps
The hydrometallurgical testwork was performed by EnviroLeach Technologies Inc., a 100-per-cent wholly owned subsidiary of Iberian Minerals. Met-Solve Laboratories and ALS Global performed independent verification of the sample solutions and solids. "These results are very encouraging and far better than we hoped for. Given these results, further testwork including bulk sampling and pilot plant testing with EnviroLeach is justified. We plan to demonstrate economic viability by working towards a feasibility study, and that will enable Coronet to unlock the project's cash flow potential," said Theo van der Linde, president of Coronet.
Compared with hydrometallurgical testwork performed at a lab in Denver in 2012 on similar samples employing cyanide, the x-leach showed significant improvement in recoveries using the EnviroLeach solution versus cyanide. The x-leach residence time was three times shorter (24 hours versus 72 hours) with 295-per-cent-better recoveries on the Pink tails, 278 per cent better on the Brown tails, 170 per cent better on the Bill placer and almost identical recoveries on the White Caps dumps.