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This form is one step up from the single hole cubing method. With multiple holes on a site, you may find yourself comfortable in estimating a total size of the ore body, with weighted average grades (for example, 1,250 metres long, by 275 metres wide, by 400 metres in depth, and 1.0 grams of gold per tonne). As with the cubing form, just fill in the input boxes in the form below. Calculations of the valuation for this ore body are automatic. Like the cubing model, this is not something you can do with any certainty. As they say, the drilling rig is the ‘truth machine’. At the same time, you can use this as a preliminary tool for comparison across deposits and across companies. Make sure you don’t lose sight of the average distance from the surface to the beginning of mineralization, as this overburden will need to be considered in the costing of the project. |
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