The table below details Base Metal Resources as at 31 March 2023.
Table 12: Base Metal Resources (additional to Reserves)
2023 | 2022 | |||||||||||
Tonnes and grade | Tonnes and grade | |||||||||||
Operation1 | Category | Tonnes (Mt) |
% Zn |
% Pb |
% Cu |
Ag g/t |
Tonnes (Mt) |
% Zn |
% Pb |
% Cu |
Ag g/t |
% change in RoM3 |
Deeps mine4 | Measured | 4.3 | 2.7 | 3.6 | 0.4 | 46 | 4.2 | 2.4 | 2.4 | 0.3 | 29 | 1 |
Northern Cape (UG) (zinc, lead, copper and silver) |
Indicated | 6.0 | 2.6 | 2.2 | 0.5 | 33 | 8.3 | 2.2 | 1.6 | 0.5 | 25 | (27) |
26% attributed to Exxaro2 | Inferred | 0.0 | ||||||||||
Total | 10.3 | 2.6 | 2.8 | 0.5 | 35 | 12.5 | 2.3 | 1.8 | 0.5 | 26 | 18 | |
Swartberg mine | Measured | 0.0 | ||||||||||
Northern Cape (OC/UG) (zinc, lead, copper and silver) |
Indicated | 69.4 | 0.9 | 2.0 | 0.3 | 40 | 76.8 | 0.9 | 2.0 | 0.3 | 38 | (10) |
26% attributed to Exxaro2 | Inferred | 35.1 | 1.0 | 2.2 | 0.3 | 41 | 36.1 | 0.9 | 2.2 | 0.3 | 40 | (3) |
Total | 104.5 | 0.9 | 2.1 | 0.3 | 40 | 113.0 | 0.9 | 2.1 | 0.3 | 39 | (7) | |
Big Syncline project | Measured | 0.0 | ||||||||||
Northern Cape(OC) (zinc) | Indicated | 6.1 | 3.0 | 1.1 | 16 | 6.1 | 3.0 | 1.1 | 16 | – | ||
26% attributed to Exxaro2 | Inferred | 185.6 | 2.4 | 1.0 | 10 | 185.6 | 2.4 | 1.0 | 12 | – | ||
Total | 191.7 | 2.5 | 1.0 | 12 | 191.7 | 2.5 | 1.0 | 12 | – | |||
Gamsberg North mine | Measured | 7.7 | 7.7 | 0.5 | 7.5 | 7.7 | 0.5 | 3 | ||||
Northern Cape(OC/UG) (zinc) | Indicated | 36.7 | 6.5 | 0.5 | 35.5 | 6.3 | 0.5 | 3 | ||||
26% attributed to Exxaro2 | Inferred | 20.3 | 6.4 | 0.5 | 22.7 | 6.1 | 0.5 | (10) | ||||
Total | 64.7 | 6.6 | 0.5 | 65.6 | 6.4 | 0.5 | (1) | |||||
Gamsberg East | Measured | 0.0 | ||||||||||
Northern Cape(project) (zinc) | Indicated | 0.0 | ||||||||||
26% attributed to Exxaro2 | Inferred | 65.0 | 7.9 | 0.5 | 5 | 65.1 | 7.9 | 0.5 | 5 | – | ||
Total | 65.0 | 7.9 | 0.5 | 5 | 65.1 | 7.9 | 0.5 | 5 | – | |||
Gamsberg South | Measured | 0.0 | ||||||||||
Northern Cape(project) (zinc) | Indicated | 0.0 | ||||||||||
26% attributed to Exxaro2 | Inferred | 34.2 | 6.2 | 0.5 | 7 | 36.0 | 6.1 | 0.5 | 7 | (5) | ||
Total | 34.2 | 6.2 | 0.5 | 7 | 36.0 | 6.1 | 0.5 | 7 | (5) | |||
Gamsberg Kloof5 | Measured | 0.0 | ||||||||||
Northern Cape(project) (zinc) | Indicated | 15.8 | 8.4 | 0.6 | 7 | 0.0 | 100 | |||||
26% attributed to Exxaro2 | Inferred | 6.8 | 9.2 | 0.5 | 7 | 18.8 | 8.6 | 0.6 | 7 | (64) | ||
Total | 22.7 | 8.7 | 0.6 | 7 | 18.8 | 8.6 | 0.6 | 7 | 21 |
For operations over which Exxaro has no management control, please refer to the relevant company's website for supplementary information: www.vedantaresources.com/investor-relations/
1 | Operation refers to the BMM operating mine or significant project. Mining method: opencast (OC) or underground (UG). |
2 | Figures are reported at 100%, irrespective of percentage attributable to Exxaro. |
3 | The percentage difference between 2023 reported MTIS and 2022 reported MTIS. Brackets signify a decrease. |
4 | Deeps mine decrease is mainly the result of poorer revenue factors used in the update of models. |
5 | Gamsberg Kloof increase is the result of new drilling information that led to an update of the model. |