DFS Reserve, page-9

Thanks for your work but don't beat yourself up Cash. It looks like a difficult science. We'll know the company's thoughts soon enough. Here are some articles about COG if anyone is interested.
https://www.srk.com.au/en/newsletter/mineral-resource-estimation/cut-grades-mineral-resource-reporting-going-extra-rare-earthhttps://www.geologyforinvestors.com/what-is-cut-off-grade-an-introduction-to-overlooked-yet-critical-concept-in-mining-and-resource-investing/https://www.linkedin.com/pulse/understanding-cut-off-grade-4-tonnage-costs-why-my-brian