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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

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