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Securing the Future (cont’d)<br />
Ore Reserves and Resources summary as at 30 June 2011<br />
34<br />
Category Volume,<br />
‘000 m 3<br />
Reserves - Proven<br />
- Probable<br />
Building on Success: Developing Resources for the Future<br />
2,473<br />
49,474<br />
Whole-of-Hole<br />
Grade, Kg Sn/m 3<br />
0.29<br />
0.29<br />
Contained Tin<br />
(Sn)<br />
tonnes<br />
725<br />
14,495<br />
Total Reserves 51,947 0.29 15,220<br />
Resources - Measured<br />
- Indicated<br />
- Inferred<br />
pt koBa tIn<br />
PT Koba Tin undertakes alluvial mining operations in the island<br />
of Bangka, Indonesia. It mines the alluvial deposit using a<br />
large capacity bucket line dredge and several gravel pumps<br />
in combination with palong (sluices boxes) units. The mining<br />
units are served by large fleets of earthmoving equipments for<br />
overburden removal and for transfer of tin-bearing materials to<br />
the processing plants.<br />
Exploration activities are ongoing for discovery of new<br />
resources especially at locations previously excluded from the<br />
current production schedule including lower grade areas and<br />
deeper ground as well as in areas designated as “production<br />
forests”. The discovery of additional resources would justify the<br />
extension of its CoW for a further 10 years to 2023.<br />
13,604<br />
36,943<br />
45,617<br />
Total Resources 96,164 0.20 18,935<br />
Total Reserves and Resources 148,111 0.23 34,155<br />
0.32<br />
0.15<br />
0.20<br />
4,393<br />
5,488<br />
9,054