Itronics Inc. reported that it is developing breakthrough technology Rock Kleen to replace its previously validated KAM-Thio fluid for neutralization of residual cyanide, and recovery of residual silver, gold, and metal oxides from silver/gold heap leach mine tailings. The new Rock Kleen chemistry is manufactured from virgin ingredients and is based on more than 30 years of experience with similar fluids manufactured from spent photographic liquids. The company has been working on chemical replacement of spent photographic chemistry used in its GOLD’n GRO fertilizers and for the KAM-Thiorock cleaning fluid for several years in anticipation that spent photo liquid supply might decline and be insufficient to support GOLD’n GRO fertilizer sales growth. The company is bench marking the Rock Kleen system using samples supplied by Comstock Mining and it has entered into an agreement with a second silver company with 12 times the tailing tonnage to test Rock Kleen on previously leached silver ore with a high residual silver content and complex silver mineralogy.  Testing Rock Kleen is presently underway on heap leach tailings materials from the second mine, and from Comstock Mining. These tests are further validating this breakthrough technology for application in the mining industry to achieve zero waste. The company expects to transition to virgin chemicals for all of its liquid products over the next three years. The company still plans to use spent photo liquids for some of its needs as long as it is economical to do so, and continues to recycle it to zero waste.