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