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| Mineral
reserve and mineral resource overview |
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We strive
to achieve
accuracy, credibility
and transparency and
disseminate quality
information to stakeholders
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In 2002, the DRD attributed Mineral Resource has increased by 5.64
million ounces of gold (9%) to 70.9 million ounces compared to 2001
and the attributed Mineral Reserve, increased by 1.89 million ounces
(13%) of gold to 16.3 million ounces.
1 REPORTING CODE AND DEFINITIONS
The Company reports its South African Mineral Resource and Mineral
Reserves in compliance to the South African Code for Reporting Mineral
Resources and Mineral Reserves (the SAMREC Code). The
Code sets out the minimum standards, recommendations and guidelines
for Public Reporting of exploration results, Mineral Resource and
Mineral Reserves in South Africa. The Code has been adopted by the
South African Institute of Mining and Metallurgy (SAIMM)
and is incorporated in the JSE Securities Exchange rules in relation
to listing requirements and reporting obligations.
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The Companys Australasian operation, Tolukuma,
reports its Mineral Resource and Ore Reserves in compliance to the Australasian
standards laid down by the Australasian Joint Ore Reserve Committee (JORC)
Code for reporting identified Mineral Resources and Ore Reserves.
The SAMREC Code is based on and is compatible with the JORC Code. In this
context, Ore Reserve has the same meaning as Mineral Reserve.
The Companys Mineral Resource and Mineral Reserves were reviewed
and audited for SAMREC and JORC Code compliance independently by Resource
Service Group (RSG). RSG is an exploration, mining and resource consulting
firm, which has been providing services and advice to the international
mineral industry and financial institutions since 1987. The audit report
has been compiled by Mr Mike Sperinck (MAUSIMM and SACNASP) and Mr Colin
Jones (MAUSIMM) who have the appropriate relevant qualifications, experience,
competence and independence to be considered an independent Competent
Person under the definitions provided in the Codes. They each have
over 20 years experience in the mining industry and regularly conduct
due diligence studies and technical audits around the world for mining
companies and financial institutions.
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The audit process undertaken by RSG has been carried out through
the review of the data, techniques, procedures and parameters used
in the resource and reserve preparation during three separate site
visits to the South African operations, and an extended trip to
the Tolukuma operation. DRD personnel, or suitably qualified contractors,
undertook the work with input and discussion from RSG. The audit
included sampling, assaying, resource estimation, classification,
conversion to reserves through the mine planning process, costing
and mining factors. All reserves that have been included in the
reserve tabulation are included in the current life of mine plans.
The relevant definitions of the Mineral Resource and Mineral Reserve
categories are included in the Glossary of Terms.
2 THE MINERAL AND PETROLEUM RESOURCES DEVELOPMENT
BILL
The Mineral and Petroleum Resources Development
Bill (The Bill) in its current form was approved by
Parliament but has not yet been enacted. The Bill cannot be implemented
without further legislation (the Money Bill, Beneficiation Bill,
Regulations and Prescribed Social and Labour Plans), which is expected
by the end of 2002.
The main objective of The Bill is that the State becomes the custodian
of the nations mineral and petroleum resources. The prospecting
and mining rights will be granted in preference to historically
disadvantaged persons. A Mining Right will be granted for a maximum
of 30-years, which is renewable, in
30-year maximum terms.
DRD will have to convert its Mining Rights for current mining operations
within five years and its Prospecting Rights for current prospecting
operations within two years. Applications for new Mining Rights
and Prospecting Rights, will only be granted when stipulated requirements
are met.
3 COMPETENT PERSONS
The compilation of the Mineral Resource
and Mineral Reserve statements is a team effort, with overall responsibility
and accountability with the appointed Mineral Resource Manager for
the Mineral Resources on each operation. The appointed Mineral Resource
competent persons for each operation that have overall responsibility
for the information in this report are:
Crown William John Laing (SACNASP);
Blyvoor Jan Johannes Jacobus Petrus Pretorius (SACNASP);
Buffels and Harties Mathys Hendrik Greeff Heyns (SACNASP);
Argonaut Daniël Stephanus du Toit van den Bergh (PLATO);
and
Tolukuma Michael John Bird (AusIMM).
The individuals who have provided input into this Annual Report,
listed above, have extensive (greater than five years) relevant
experience in the mining industry and type of deposits mined. They
are all employees of the Company and are the designated competent
persons, in terms of the SAMREC and JORC Codes, with relevant geological
and survey backgrounds relative to the style of mineralisation and
are registered members of recognised statutory organisations.
The competent person, designated in terms of the SAMREC Code for
the Mineral Reserves, and taking corporate responsibility for the
compilation and reporting of the DRD Mineral Resource and Mineral
Reserves is Daniël Stephanus du Toit van den Bergh, who is
an employee of the Company. He has an MSc in Mineral Economics and
is a registered member of PLATO and the SAIMM and has 27-years relevant
experience.
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4 OPERATIONS
During the current reporting period, the Company
has:
Sold the West Wits Operation and closed Durban Roodepoort Deep
Mine, a loss of 206 kozs of gold Mineral Reserve; and
Sold 60% of Crown Recoveries, a reduction of 900 kozs of gold Mineral
Reserve.
4.1 Combined
The DRD-attributed Mineral Resource (including the Argonaut Project) has
increased in 2002 to 71.0 million ounces from 65.2 million ounces of gold
in 2001. The Mineral Reserves has increased to 16.3 million ounces from
14.4 million ounces of gold, both increases being largely due to the increase
of the Rand gold price used for the resource calculations, from R64,528/kg
in 2001 to R102,500/kg in 2002.
4.2 Blyvoor
The total Mineral Resource was increased 45% by 12 Moz of gold predominately
due to the inclusion of the Expansion Project and re-commissioning of
the old Doornfontein 1 Shaft, now 6 Shaft. The total Mineral Reserves
increased 2% by 135 koz of gold. This includes the negative impact of
depletion and the positive contribution of the inclusion of carbon leader
pillars, which were excluded due to lack of access previously, as well
as the Expansion Project.
The mine is situated on the Far West Rand Goldfield, on the northwestern
rim of the Witwatersrand Basin and comprises both underground and surface
reclamation operations, a metallurgical plant, tailings deposition facilities
and associated infrastructure. The mine exploits the Carbon leader (CLR)
and Middelvlei (MR) reef horizons of the Central Rand Group.
The CLR is the principal economic horizon across the lease area and is
a planar single sheet conglomerate. The CLR typically comprises basal
carbon seam, overlain by a thin, small pebble conglomerate, enriched in
carbon in the lower portion. The MR lies some 50 m to 75 m above the CLR
and consists of a variable number of polymictic quartz conglomerate bands,
interbedded with coarse grain quartzites. The grade of the MR is more
variable, with distinctive payshoots forming as southwards orientated
linear zones.
4.3 Buffels
The operations total Mineral Resource reduced 1% by 64 koz due to
depletion exceeding additional Mineral Resources. The total Mineral Reserves
increased 37% by 488 koz of gold due to proportionally lower pay-limit.
The mine is situated on the Klerksdorp Goldfield, on the northwestern
rim of the Witwatersrand Basin and comprises both underground and surface
reclamation (waste rock dumps) operations, a metallurgical plant, tailings
deposition facilities and associated infrastructure facilities. The mine
exploits the Vaal Reef (VR) occurring within the Central Rand
Group of the Witwatersrand Supergroup, at the base of the Strathmore formation.
The VR is an oligomictic, pebble quartz arentic. Gold is present throughout
the reef horizon, but is concentrated on the bottom contact, where carbon
commonly forms as a thin seam.
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