Ann: Bonanza Grades at RPM North Including 132m @ 10.1 g/t Au, page-382

(I have zero background in mining other than investing in mining stocks, so this is the best layman's interpretation/understanding I can come up with - but it will hopefully be helpful to others)

I think @kduvey does resource modelling for a living. I suspect they can correct me if I am wrong. There may be others here too that have some good knowledge.

I suspect what the resource modeller will do is use their geological interpretation of the orientation of the footwall structure to set a boundary for the resource model. They don't have an IP survey at RPM.

I think the resource modeller will then select blocks 50m x 50m x 50m to include or exclude in the resource model based on a contained assay data points (at least 8 or 16 points ). Resource modelling software probably does this part automagically.






This is the description of the search algorithm used for the Korbel Resource model.



The algorithm then creates a search ellipse to find nearby data points used as the basis for an estimate for the average grade of any 50m x 50m x 50m block. You can see some graphical depictions of this process here:

https://help.seequent.com/Geo/2021.1/en-GB/Content/estimation/block-estimate-interrogator.htm



This all basically means that any blocks included in the resource model will need to contain at least 8 or 16 data points within 75m radius or 150m radius of other data points. The software will then basically estimate the average grade for every 50m x 50m x 50m block by running thousands of interpolation calculations across the entire model.

The software will then give an estimate for each and every block, presumably with parameters used for cut-off. The resource modeller will then review the results and determine any blocks they decide to manually exclude from the model.

Blue box - approximate - radius 75m (diameter 150n) around RPM-005
Pink box - approximate - radius 150m (diameter 300m) around RPM-005