Review of mineral resources and ore reserves

Kumba’s ore reserves

Kumba’s ore reserves

Table continues below

Kumba’s ore reserves

Table continues below

The tonnages are quoted in metric tonnes and million tonnes is abbreviated as Mt.

Rounding of figures may cause computational discrepancies.

Ore reserve figures reported at 100% irrespective of percentage attributable to Kumba.

1. The net decrease of 21.3Mt in the ore reserves of Sishen Mine is primarily the result of annual production, however the effect is not reflected because a more selective approach to the life-of-mine scheduling of ore reserves was adopted, which allowed for more mineral resources to be used as economically mineable material.
2. There is a net decrease in ore reserves at Thabazimbi Mine of 0.3Mt, where a redesign (increase in size) of one of the pit layouts offset most of the effect of annual production.
3. The Sishen South ore reserves, with construction awaiting granting of a mining right, have increased by 10.3Mt due to optimisation of the scheduling procedure, which allows for blending lower-grade iron ore. Note, due to a full revision of the mineral resources in late 2007, the ore reserves reported are based on 2006 geological models; globally, the mineral resource estimates between the 2007 and 2006 models are similar, however, local variations could impact ore reserves when estimates are updated in 2008.