Osisko Development (US:ODV) Globenewswire·2025-07-07 14:51Core Insights - Osisko Development Corp. announced positive results from an ore sorting testing program at its Cariboo Gold Project, indicating gold recoveries and upgrade ratios consistent with the 2025 feasibility study (FS) assumptions [2][5][12] - The testing program utilized a significantly larger sample size compared to previous tests, with a focus on optimizing the processing flowsheet [4][5] - Notably, the previously untested 6–10 mm size fraction showed a gold recovery of 92% and a mass pull of 41%, suggesting potential for further optimization [2][5][9] Summary by Sections Highlights - The ore sorting test results align with the 2025 FS assumptions, demonstrating effective gold recovery rates across various particle sizes [2][5] - The 6–10 mm size fraction, previously unassessed, achieved a gold recovery of 92% [2][5] Testing Methodology - The testwork was conducted on a bulk sample of approximately 80 tonnes, utilizing an x-ray transmission sensor (XRT) to evaluate the material [2][5][9] - The program aimed to optimize ore sorting parameters and validate the processing flowsheet [4][5] Results Overview - The 10–30 mm size fraction achieved a gold recovery of 89% with a mass pull of 45%, while the 30–70 mm size fraction achieved 84% recovery with a mass pull of 58% [2][5] - The 6–10 mm size fraction demonstrated a 92% gold recovery with a 41% mass pull, indicating a significant opportunity for optimization [2][5][9] Project Background - The Cariboo Gold Project is a permitted, 100%-owned feasibility-stage project located in central British Columbia, covering approximately 186,740 hectares [11][12] - The project hosts probable mineral reserves of 2.07 million ounces of gold and has received necessary permits for development [11][12] Next Steps - The company plans to conduct further optimization work, including a variability study to refine sorting assumptions across the deposit [5][9]