Ore Reserve Calculator
Estimate proven and probable reserves from drill data, cutoff grade, and metal price for mine planning.
Inputs
t
g/t
g/t
%
$/oz
%
Results
Economic Tonnage
857,143 t
Proven Reserve514,286 t
Probable Reserve342,857 t
Contained Metal96,452 oz
Recoverable Metal86,807 oz
Gross Metal Value$164,933,207
Above Cutoff85.7%
How to Use This Calculator
- Enter drilled tonnage and average grade (ppm or g/t) from drill hole assay data.
- Set the cutoff grade (ppm) — the minimum grade at which mining is economic.
- Enter proven confidence (%) to split reserves into proven and probable categories.
- Input metal price ($/oz) and mill recovery (%) for economic value calculation.
- Review Economic Tonnage, Proven Reserve (t), and Contained Metal to report a JORC/NI 43-101 compliant resource summary.
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