/8 If you only remove the high-grade one-metre section and...

/8 If you only remove the high-grade one-metre section and continue to extrapolate the grade the remaining mineralized intercept is now 45 m @ 1.7% Cu. The cross section below with the newly calculated intercept would be much more in line with the other drill hole intercepts. In this case, removing the high-grade one-metre section from the original intercept is a common practice to assess the overall mineralization more accurately. The residual intercept of 45 m @ 1.7% Cu is considered more in line with the typical drillhole intercepts in the immediate area, which likely have lower variability in copper grade. This information is crucial for resource estimation and mine planning, as it helps provide a more realistic picture of the deposit's economic potential.

5/8 Why would you pull out the high-grade interval? It's important to note that in mineral exploration, drillhole intercepts are reported to provide information about the distribution of minerals in the ground. High-grade intercepts are of particular interest because they may indicate the presence of a potentially economically viable ore zone. However, it's also important to consider the overall average grade of the mineralization, as high-grade pockets can be limited in extent and may not be representative of the entire deposit. In mineral exploration and resource estimation, it's common practice to adjust high-grade outliers to better represent the overall grade of the mineralized zone. This adjustment can be done statistically to ensure that the reported grades are more representative of the deposit's true characteristics. These adjustments are important for resource estimation because high-grade outliers can significantly skew the average grade and potentially mislead decisions about the economic viability of a mining project. Adjusting these values helps ensure that the reported grades are more reliable and representative of the deposit's true characteristics.

/8 High grade extrapolation is much more prevalent in gold reports! In gold deposits, especially those with high-grade variability, it's crucial to properly handle and adjust high-grade outliers to obtain a more representative average grade. Here is an example: Original Intercept: The drillhole initially reported an intercept of 13.6m @ 1.6 g/t Au (21.76gxm). High-Grade Result: Within that 13.6m intercept, there was a 0.5m with a very high gold grade of 23.8 g/t Au. Residual Intercept (Without Adjustment): If we remove the high-grade 0.5-metre section, the remaining mineralized intercept is 13.1m at a much lower average grade of 0.75 g/t Au. Adjusted Intercept (With Top-Cutting): By top-cutting the high-grade section, that is adjusting the value to a statistically more representative value, you can obtain a more realistic average grade of 13.6m @ 0.9 g/t Au.

7/8 Conclusion: High grades wield significant influence on averages and can easily mislead investors. Always scrutinize the summary table, especially with gold results! Adjusting the high-grade values, whether through top-cutting or other statistical methods, helps in achieving a more balanced and reliable representation of the deposit's true grade distribution. This has important implications for resource estimation, mine planning, and economic assessments. It's a common practice in the mining industry to ensure that the results are not skewed by extreme high-grade outliers.