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Securing the Future (cont’d)<br />
32<br />
Building on Success: Developing Resources for the Future<br />
Rahman hYDRaUlIc tIn SDn<br />
BhD<br />
The ore type is semi hard rock with cassiterite concentrated in<br />
quartz veins situated en-echelon between two dominant North-<br />
South orientated faults. Mining operations are undertaken<br />
in an open-pit and involve drilling and blasting, excavating,<br />
loading and hauling using drill-rigs, excavators, bulldozers and<br />
off-highway trucks. The ore-bearing material is hauled to the<br />
stockpiles at five ore processing plants, whilst the overburden<br />
waste is hauled and dumped at designated waste dumps.<br />
The resource estimates are based on the results of 98 reverse<br />
circulation drill holes and 30 fully cored diamond drill holes with<br />
a combined total of 15,327 drill-metres, blast hole sampling,<br />
trenching and channel sampling and past production records.<br />
Block models have been prepared using Micromine software.<br />
The ore resources are made up of:<br />
(a) The JORC compliant resources mainly from ore bodies<br />
located at the present mine pit updated up to 29 March<br />
2012 with the mined out resources excluded.<br />
(b) Newly identified areas of resources in the new exploration<br />
areas, “ore in waste” as well as depth and lateral extension<br />
of existing ore bodies. Continuing exploration will be<br />
needed to progressively upgrade the resources to the<br />
measured category and replace mined out resources.<br />
RHT’s current mining leases have recently been renewed up to<br />
the year 2030.