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Group Chief Executive Officer/Executive Director’s Report (cont’d)<br />
“... RHT has effectively<br />
replaced the mined<br />
out resources and<br />
still the estimated<br />
remaining tin<br />
resources have<br />
increased by more<br />
than two-fold<br />
compared with the<br />
previous estimates.”<br />
26<br />
tIn<br />
mInIng<br />
Rahman Hydraulic Tin. Sdn. Bhd<br />
(RHT or the Mine), Perak, Malaysia<br />
RHT which operates Malaysia’s largest open pit<br />
elluvial (semi hard rock) tin mine in the State of Perak<br />
continued to focus on pit optimization and mine design,<br />
upgrading and expansion of ore processing plant and drilling<br />
programme to increase its tin resources. The most significant<br />
development is the successful construction of a new processing<br />
plant, a 6-lane Palong, which adds about 20% to production.<br />
The overall results have been commendable with production,<br />
earnings and cash flows exceeding expectation.<br />
2011 2010<br />
Production of tin-in-concentrates<br />
(Tonnes) 2,010 1,769<br />
Profit before tax (RM million) 59.01 28.23<br />
Tin Resource<br />
The drilling programmes and resource evaluations undertaken<br />
in 2010 and 2011 have also been highly successful. The<br />
resource estimates are based on a combination of Reverse<br />
Circulation drill holes (98 holes) and Diamond drill holes (49<br />
holes), blast hole sampling, trenching and channel sampling<br />
and past production records using standards in compliance<br />
with the Australasian Code for Reporting of Exploration Results,<br />
Mineral Resources and Ore Reserves (the JORC Code). The<br />
results have indicated that since the last published tin resource<br />
statement as of 15th March 2010 disclosed in the 2010 Annual<br />
Building on Success: Developing Resources for the Future<br />
Report, RHT has effectively replaced the mined out resources<br />
and still the estimated remaining tin resources have increased<br />
by more than two-fold compared with the previous estimates.<br />
Resource Class Contained tin (tonnes)<br />
2011/2012 2010<br />
(As at 29 (As at 15<br />
March 2012) March 2010)<br />
Measured 6,721 4,786<br />
Indicated 7,468 6,081<br />
Inferred 26,903 8,612<br />
Total 41,092 19,479<br />
Continuing exploration and drilling will be needed to<br />
progressively upgrade the resources to measured category<br />
and replace mined out resources. Based on the present rate<br />
of annual production the current estimated resources could<br />
prolong RHT’s mine life beyond 15 years.<br />
The Mine will continue to undertake pit optimization and<br />
design and will accelerate the removal of overburden by<br />
cutting-back the walls of the open-pit to gain access to the<br />
ore body that is dipping down as mining progresses and at<br />
the same time create a large enough pit floor to establish