Core Insights - Nevada King Gold Corp. has reported positive results from its Phase 2 metallurgical testing program at the Atlanta Gold Mine Project, indicating a simplified processing flow and potential for lower operating and capital costs [1][6][11] Metallurgical Testing Results - Phase 2 metallurgical testing confirmed and expanded upon Phase 1 results, demonstrating that gold and silver mineralization at Atlanta is suitable for conventional oxide processing methods [1][5] - The testing focused on two main categories of material: SBX (below the main unconformity) and volcanics (above the unconformity), with a total of 26 composites tested in Phase 2 [6][11] - Gold extraction rates for various materials were reported as follows: - Non-silicified volcanics: 90.1% at an average head grade of 2.71 g/t Au - Silicified volcanics: 86.1% at an average head grade of 2.80 g/t Au - SBX: 87.7% at an average head grade of 3.23 g/t Au - Dolomite: 80.6% at an average head grade of 0.32 g/t Au [7][12][16] Processing Methods - The inclusion of High Pressure Grinding Rolls (HPGR) is expected to lower overall operating costs for SBX material compared to traditional SAG/Ball mill processing [6][10] - Non-silicified volcanics are suitable for heap leaching, while silicified volcanics require conventional milling [9][10] - The revised flowsheet simplifies the processing method, potentially reducing initial capital costs by eliminating multiple crushing stages and streamlining heap leaching processes [11][12] Summary of Extraction Results - The combined gold extraction from fine milling at a 200 mesh grind (P80=75µm) showed robust recoveries across key mineralized units, with weighted averages of: - 90.1% for non-silicified volcanics - 86.1% for silicified volcanics - 87.7% for SBX [11][12] - Column leaching of conventional crushed material yielded a weighted average extraction of 83.1% for non-silicified volcanics [11][12] Comprehensive Testing Program - The Phase 2 program added to the extensive dataset from Phase 1, which included 22 drill core composites and three bulk samples, providing a comprehensive understanding of the various lithologies and grade ranges within the Atlanta resource [11][12]