| |
| The mineral resources and ore reserves attributed to Kumbas
current operations and growth projects are summarised in the tables
below. Note that mineral resources are reported inclusive of ore
reserves and at 100% irrespective of the percentage attributable
to Kumba. Mineral resources and ore reserves were estimated by competent
persons on an operational basis and in accordance with the SAMREC
Code (2000) for South African properties and the JORC Code (2004)
for Australian properties. All competent persons have sufficient
relevant experience in the style of mineralisation, the type of
deposit, mining method and in the activity for which they have taken
responsibility to qualify as a competent person as defined
in these codes. They have signed off their respective estimates
in the original mineral resource and ore reserve statements for
the various operations and consent to the inclusion of the information
in this report in the form and context in which it appears. A list
of Kumbas competent persons is available from the company
secretary on written request. The processes and calculations associated
with the estimates have been audited by internal independent competent
persons and, on a three- to four-year cycle basis, by external consultants.
In addition, note that all operations and projects were externally
audited as part of the Kumba/Newco due diligence process. The person
within Kumba designated to take corporate responsibility for mineral
resources and ore reserves, HJ van der Berg, the undersigned, has
reviewed and endorsed the estimates reported. |
| |
|
| HJ van der Berg |
| MSc (Geology), BSc (hons) |
| Pr Sci Nat (400099/01) |
| Manager, Mineral Assets |
| |
| COMMENT |
Kumbas tenure over its mineral assets as listed in the
tables was audited and is confirmed, with the following modifications
and considerations. As of 15 November 2005, Kumba owns 100% of
Ticor Australia and Ticor SA and therefore all the mineral resources
and ore reserves in these companies. As cautioned in the previous
annual report, Kumba no longer owns a 50% share in the Australian
Hope Downs project and these iron ore resources are not reported.
New-order prospecting rights applications based on mineral rights
ownership on several farms included in the Leeuwpan and Strehla
mineral resource figures have been refused by the Department of
Minerals and Energy (DME). An appeal has been lodged and senior
legal counsel is of the opinion that the decision will be reversed;
therefore the affected mineral resources and ore reserves are
still reported.
Kumba fully supports the objectives of the Minerals Act and
has submitted applications to convert its old-order mining licences
to new-order mining rights for all its mines except Leeuwpan,
which will be submitted during 2006. The applications were audited
by independent external consultants and declared compliant with
the requirements of the act and other relevant regulations. All
applications have been accepted by the DME and the administrative
process will now follow its course. Three new mining rights applications
were submitted during the year: Sishen South (iron ore); Inyanda
(coal) and Fairbreeze C Extension (heavy minerals). The granting
of these mining rights will allow notable production growth or
extension of the productive mine life in these commodities.
The objective to optimise the use of mineral resources is being
driven by the application of good mineral resource management
principles and innovative approaches. Upgrading medium-grade iron
ore through technology has proved viable and will be incrementally
implemented at Sishen mine. This breakthrough has a significant
impact on ore definition and therefore on both mineral resource
and ore reserve estimation at Sishen (see DMS and jig plant material
in tables). An extensive programme is under way to re-interpret
the geology according to the changed ore definition and revise
the modelling at Sishen South and Thabazimbi to evaluate the potential
of medium-grade iron ore deposits previously excluded. At Grootegeluk,
an extensive drilling programme is in progress on five farms adjacent
to the present mining licence area. Eskoms reported expansion
in electricity generation and the buoyant market for char and
coke necessitate upgrading Kumbas coal resources to reserves
in the Waterberg coalfield.
An effective exploration programme at Rosh Pinah has extended
the mines life to eight years compared to the five to six
years reported in 2004. The better zinc price has also created
the opportunity to consider lower-grade ore that was previously
excluded from reserves. Through innovative exploitation, these
ores can make a significant difference to the mines future.
These options are being pursued as a priority.
Although security of tenure has not yet been satisfactorily
resolved, the second season of exploration has commenced in Senegal,
with drilling on a number of ore bodies in the north of the Falémé
iron ore area. Kumba has also started heavy minerals exploration
on the Port Durnford prospecting right in KwaZulu-Natal and a
drilling programme on the Ranobé heavy minerals project
is under way in Madagascar. |
| |
| Table 1: Kumbas mineral resource estimates for 2004
and 2005 |
| (Mineral resource estimates reported here are inclusive of ore
reserve estimates reported in table 2. They have been estimated
in accordance with the SAMREC and JORC codes for South African and
Australian operations/projects respectively) |
| |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
| |
|
|
|
2005 |
|
2004 |
|
|
| |
|
% attributable |
Resource |
Tonnes |
|
Tonnes |
|
% |
| Commodity |
Operation |
to Kumba |
category |
(million) |
Grade |
(million) |
Grade |
change |
| |
|
|
|
|
%Fe |
|
%Fe |
|
| Iron ore |
Sishen Iron Ore Mine (1) |
78,6 |
Measured |
1 477 |
57,4 |
754 |
65,2 |
|
| |
DMS + jig plant |
|
Indicated |
480 |
56,5 |
636 |
64,8 |
|
| |
|
|
Inferred |
29 |
55,9 |
249 |
64,2 |
|
| |
|
|
Total |
1 986 |
57,2 |
1 639 |
64,9 |
21,17 |
| |
Sishen Iron Ore Mine (1) |
78,6 |
Measured |
94 |
64,9 |
Additional underground |
|
| |
additional resources |
|
Indicated |
223 |
64,7 |
resources were reported |
|
| |
|
|
Inferred |
153 |
64,5 |
inclusive of Sishen resources in 2004 |
|
| |
|
|
Total |
469 |
64,7 |
|
49,81 |
| |
Thabazimbi Iron Ore Mine (2) |
100,0 |
Measured |
10,9 |
62,1 |
51,0 |
63,1 |
|
| |
within current pit layouts |
|
Indicated |
3,9 |
61,6 |
20,6 |
62,4 |
|
| |
|
|
Inferred |
3,0 |
61,7 |
24,0 |
62,1 |
|
| |
|
|
Total |
17,9 |
61,9 |
95,6 |
62,7 |
(35,91) |
| |
Thabazimbi Iron Ore Mine (2) |
100,0 |
Measured |
12,4 |
62,1 |
Additional resources were |
|
| |
additional resources |
|
Indicated |
14,3 |
61,3 |
reported inclusive of |
|
| |
|
|
Inferred |
16,8 |
60,0 |
Thabazimbi resources in 2004 |
|
| |
|
|
Total |
43,4 |
61,0 |
|
|
|
| |
Sishen South (3) |
100,0 |
Measured |
140,4 |
65,4 |
145,6 |
65,4 |
|
| |
advanced project |
|
Indicated |
107,5 |
64,4 |
146,9 |
64,6 |
|
| |
|
|
Inferred |
42,3 |
62,0 |
118,5 |
63,5 |
|
| |
|
|
Total |
290,2 |
64,6 |
411,0 |
64,5 |
(29,38) |
| |
Zandrivierspoort |
50,0 |
Measured |
|
|
|
|
|
| |
project |
|
Indicated |
447 |
34,9 |
447 |
34,9 |
|
| |
|
|
Inferred |
|
|
|
|
|
| |
|
|
Total |
447 |
34,9 |
447 |
34,9 |
|
| |
|
|
|
|
Raw coal |
|
Raw coal |
|
| Coal |
Grootegeluk Coal Mine |
100,0 |
Measured |
1 428 |
Raw coal |
1 463 |
Raw coal |
|
| |
|
|
Indicated |
2 075 |
Raw coal |
2 075 |
Raw coal |
|
| |
|
|
Inferred |
2 513 |
Raw coal |
2 513 |
Raw coal |
|
| |
|
|
Total |
6 016 |
Raw coal |
6 052 |
Raw coal |
(0,59) |
| |
Leeuwpan Coal Mine (4) |
100,0 |
Measured |
169,1 |
Raw coal |
186,9 |
Raw coal |
|
| |
|
|
Indicated |
9,8 |
Raw coal |
9,8 |
Raw coal |
|
| |
|
|
Inferred |
|
|
|
|
|
| |
|
|
Total |
178,9 |
Raw coal |
196,7 |
Raw coal |
(9,05) |
| |
Tshikondeni Coal Mine (5) |
100,0 |
Measured |
25,7 |
Raw coal |
27,2 |
Raw coal |
|
| |
|
|
Indicated |
10,1 |
Raw coal |
10,1 |
Raw coal |
|
| |
|
|
Inferred |
|
|
|
|
|
| |
|
|
Total |
35,8 |
Raw coal |
37,3 |
Raw coal |
(3,97) |
| |
Moranbah South, Australia |
100,0 |
Measured |
|
|
|
|
|
| |
|
|
Indicated |
586 |
Raw coal |
586 |
Raw coal |
|
| |
|
|
Inferred |
124 |
Raw coal |
124 |
Raw coal |
|
| |
|
|
Total |
710 |
Raw coal |
710 |
Raw coal |
|
| |
Inyanda Coal |
50,0 |
Measured |
15,3 |
Raw coal |
15,3 |
Raw coal |
|
| |
|
|
Indicated |
|
|
|
|
|
| |
|
|
Inferred |
|
|
|
|
|
| |
|
|
Total |
15,3 |
Raw coal |
15,3 |
Raw coal |
|
| |
Strehla (6) |
100,0 |
Measured |
|
|
|
|
|
| |
|
|
Indicated |
22,5 |
Raw coal |
22,5 |
Raw coal |
|
| |
|
|
Inferred |
|
|
|
|
|
| |
|
|
Total |
22,5 |
Raw coal |
22,5 |
Raw coal |
|
| |
|
|
|
|
% Ilmenite |
|
% Ilmenite |
|
| Heavy minerals |
Hillendale Mine + Braeburn (7) |
100,0 |
Measured |
48,7 |
3,8 |
56,0 |
3,7 |
|
| |
|
|
Indicated |
|
|
|
|
|
| |
|
|
Inferred |
|
|
|
|
|
| |
|
|
Total |
48,7 |
3,8 |
56,0 |
3,7 |
(13,06) |
| |
Fairbreeze A+B+C+C Ext (8) |
100,0 |
Measured |
202 |
3,7 |
196 |
3,7 |
|
| |
|
|
Indicated |
27 |
2,5 |
27 |
2,5 |
|
| |
|
|
Inferred |
|
|
|
|
|
| |
|
|
Total |
229 |
3,6 |
223 |
3,5 |
(2,69) |
| |
Gravelotte sand |
100,0 |
Measured |
75,1 |
9,1 |
75,1 |
9,1 |
|
| |
|
|
Indicated |
|
|
|
|
|
| |
|
|
Inferred |
|
|
|
|
|
| |
|
|
Total |
75,1 |
9,1 |
75,1 |
9,1 |
|
| |
KwaZulu-Natal |
100,0 |
Measured |
|
|
|
|
|
| |
Block P (9) |
|
Indicated |
40,6 |
3,1 |
40,6 |
3,1 |
|
| |
|
|
Inferred |
|
|
|
|
|
| |
|
|
Total |
40,6 |
3,1 |
40,6 |
3,1 |
|
| |
Fairbreeze D (9) |
100,0 |
Measured |
|
|
|
|
|
| |
|
|
Indicated |
9,2 |
2,5 |
9,2 |
2,5 |
|
| |
|
|
Inferred |
|
|
|
|
|
| |
|
|
Total |
9,2 |
2,5 |
9,2 |
2,5 |
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
2005 |
|
2004 |
|
|
| |
|
% attributable |
Resource |
Tonnes |
|
Tonnes |
|
% |
| Commodity |
Operation |
to Kumba |
category |
(million) |
Grade |
(million) |
Grade |
change |
| |
|
|
|
|
% Ilmenite |
|
% Ilmenite |
|
| Heavy minerals |
Eastern Cape |
100,0 |
Measured |
232,9 |
4,5 |
232,9 |
4,5 |
|
| (continued) |
Nombanjana, Ngcizele, |
|
Indicated |
|
|
|
|
|
| |
Sandy Point old and recent |
|
Inferred |
|
|
|
|
|
| |
|
|
Total |
232,9 |
4,5 |
232,9 |
4,5 |
|
| |
Limpopo sand |
100,0 |
Measured |
12,5 |
10,5 |
12,5 |
10,5 |
|
| |
Gravelotte pebbles and |
|
Indicated |
|
|
|
|
|
| |
Letsitele sand |
|
Inferred |
31,3 |
4,0 |
31,3 |
4,0 |
|
| |
|
|
Total |
43,8 |
5,9 |
43,8 |
5,9 |
|
| |
Limpopo rock |
100,0 |
Measured |
|
|
|
|
|
| |
Gravelotte rock and |
|
Indicated |
53,6 |
25,9 |
53,6 |
25,9 |
|
| |
Letsitele rock |
|
Inferred |
112,3 |
20,7 |
112,3 |
20,7 |
|
| |
|
|
Total |
165,9 |
22,4 |
165,9 |
22,4 |
|
| |
Ranobé, Madagascar (10) |
100,0 |
Measured |
|
|
The Ranobé heavy |
|
| |
Upper Sand Unit |
|
Indicated |
553 |
4,6 |
minerals project was not |
|
| |
|
|
Inferred |
|
|
reported in 2004 |
|
| |
|
|
Total |
553 |
4,6 |
|
|
|
| |
|
|
|
|
% THM |
|
% THM |
|
| |
Tiwest, Australia |
50,0 |
Measured |
157 |
2,7 |
137 |
3,2 |
|
| |
Cooljarloo |
|
Indicated |
302 |
2,4 |
322 |
2,4 |
|
| |
|
|
Inferred |
25 |
1,8 |
28 |
1,9 |
|
| |
|
|
Total |
484 |
2,5 |
487 |
2,6 |
(0,55) |
| |
Tiwest, Australia (11) |
50,0 |
Measured |
|
|
44,0 |
4,6 |
|
| |
Jurien |
|
Indicated |
25,6 |
6,0 |
9,1 |
5,5 |
|
| |
|
|
Inferred |
|
|
|
|
|
| |
|
|
Total |
25,6 |
6,0 |
53,1 |
4,8 |
(51,79) |
| |
Ticor, Australia (12) |
100,0 |
Measured |
1,3 |
6,9 |
1,3 |
6,9 |
|
| |
Dongara* |
|
Indicated |
75,4 |
6,6 |
75,4 |
6,6 |
|
| |
|
|
Inferred |
|
|
|
|
|
| |
|
|
Total |
76,7 |
6,6 |
76,7 |
6,6 |
|
| |
|
|
|
|
% Zn |
% Pb |
|
% Zn % Pb |
|
| Base metals |
Rosh Pinah (13) |
89,5 |
Measured |
3,5 |
10,1 |
2,3 |
2,3 |
8,2 2,2 |
|
| |
(zinc and lead) |
|
Indicated |
2,3 |
8,1 |
2,6 |
3,5 |
11,0 3,0 |
|
| |
|
|
Inferred |
1,1 |
8,8 |
2,4 |
0,6 |
9,0 3,8 |
|
| |
|
|
Total |
6,9 |
9,2 |
2,4 |
6,5 |
9,8 2,8 |
6,32 |
| |
|
|
|
|
Metallurgical dolomite |
Metallurgical dolomite |
|
| |
|
|
|
|
% SiO2 |
|
% SiO2 |
|
| Industrial minerals |
Glen Douglas |
100,0 |
Measured |
142,3 |
<2,5 |
185,6 |
<2,5 |
|
| |
Dolomite Mine (14) |
|
Indicated |
|
|
|
|
|
| |
|
|
Inferred |
163,9 |
<2,5 |
117,3 |
<2,5 |
|
| |
|
|
Total |
306,2 |
<2,5 |
302,9 |
<2,5 |
1,07 |
| |
|
|
|
|
Aggregate |
Aggregate |
|
|
| |
|
|
|
|
Raw material |
|
Raw material |
|
| |
|
|
Measured |
40,1 |
Raw material |
12,2 |
|
|
| |
|
|
Indicated |
|
|
|
|
|
| |
|
|
Inferred |
145,1 |
Raw material |
145,0 |
Raw material |
|
| |
|
|
Total |
185,2 |
Raw material |
157,2 |
Raw material |
17,79 |
| |
|
|
|
|
Metallurgical dolomite |
Metallurgical dolomite |
|
| |
Bridgetown |
50,0 |
Measured |
7,3 |
<2,5 |
8,0 |
<2,5 |
|
| |
Dolomite Mine (15) |
|
Indicated |
|
<2,5 |
|
|
|
| |
|
|
Inferred |
3,8 |
<2,5 |
3,8 |
<2,5 |
|
| |
|
|
Total |
11,1 |
<2,5 |
11,8 |
<2,5 |
(6,42) |
|
| |
| |
| |
|
| |
The tonnages are quotes in metric tonnes and million tonnes is abbreviated
as Mt.
Rounding of figures may cause computational discrepancies.
Figures reported at 100% irrespective of percentage attributable to
Kumba.
Note that ALL operations and projects were externally audited in 2005
as part of the Kumba/Newco due diligence process.
1
|
The significant increase is due to the inclusion
of jig plant ore (Sishen expansion project); lower Fe-grade rocks
that can be beneficiated to a saleable product using jig technology.
Additional resources with a grade >60% Fe that have underground
mining potential outside of the optimised Sishen expansion project
pit are reported separately in 2005. |
2
|
Reclassification of 37,6Mt from 2004 mineral resources
to mineral inventory partly explains the decrease in 2005. Note,
the estimate reported in the 2004 report excluded 8,2Mt 55 to 60%
Fe low-grade ore for the whole operation and 3,2Mt high-grade ore
from one of the pits. |
| 3 |
133Mt of inferred mineral resources were reclassified
to mineral inventory. |
4
|
Additional drilling led to an updated geological
model and resulted in a decrease of coal resources (18Mt). See note
20 under ore reserves for comment on prospecting right. |
5
|
The coal resources formerly reported for a portion
not included in mine lease area have been excluded in the 2005 estimate
(0,3Mt). |
6
|
The mineral resources occur in an area for which
the prospecting rights are under appeal; they are quoted pending
the outcome of the appeal (SAMREC 5.5.1). |
| 7 |
Mineral resources decreased by 6,3Mt as a result
of additional drilling and subsequent deposit boundary revision. |
8
|
Fairbreeze C and C Ext were updated with new data
(0,2Mt, Fairbreeze C). The 2005 Fairbreeze C Ext mineral resource
includes a 100m boundary zone, which was excluded in 2004 (5,8Mt).
See note 23 under ore reserves for comment on mining licence. |
| 9 |
Block P and Fairbreeze D were reported as a combined
figure in 2004. |
| 10 |
Mineral resources were not reported for Ranobé in 2004. |
11
|
Resources are based on a pit boundary where revenues
are 150% of current values. Deep deposits (27,5Mt) have been reclassified
as mineral inventory. Certain resources were downgraded to indicated because drilling is too widely spaced in places. |
| 12 |
Reported as Magnetic Minerals in 2004. The Dongara
geological models were updated with new mineralogical information. |
13
|
The net increase in mineral resources at Rosh Pinah
is the result of intensive exploration, which added 0,4Mt over and
above losses to mineral inventory (0,6Mt) and mining depletion (0,6Mt). |
14
|
Part of the measured metallurgical dolomite resource
was reclassified as inferred. Updates and pit redesign resulted
in increases in metallurgical and aggregate dolomite resources in
2005. |
15
|
Bridgetowns mineral resources have been decreased
because of exploration and subsequent geology and model updates
(0,4Mt) and mining depletion (0,3Mt). |
Table 2: Kumbas ore reserve estimates for 2004 and 2005
(Ore reserve estimates reported here are included in the mineral resource
estimates reported in table 1. They have been estimated in accordance
with the SAMREC and JORC codes for South African and Australian operations/projects
respectively)
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
| |
|
|
|
|
|
2005 |
|
|
|
|
2004 |
|
|
|
| |
|
% |
|
ROM |
|
|
|
|
ROM |
|
|
|
|
|
| |
|
attributable |
Reserve |
tonnes |
|
|
|
tonnes |
|
Saleable |
% |
| Commodity |
Operation |
to Kumba |
category |
(million) |
Grade |
Saleable
product |
(million) |
Grade |
product |
change |
| |
|
|
|
|
%Fe |
Iron ore (Mt) |
|
%Fe |
Iron ore (Mt) |
|
| Iron ore |
Sishen Iron Ore Mine (16) |
78,6 |
Proved |
727 |
59,3 |
|
|
|
510 |
63,6 |
436 @ 66,3% Fe |
|
| |
DMS + jig plant |
|
Probable |
294 |
58,1 |
|
|
|
208 |
63,7 |
178 @ 66,1% Fe |
|
| |
|
|
Total |
1
021 |
59,0 |
843
@ 65,2% Fe |
717 |
63,6 |
614
@ 66,3% Fe |
42,33 |
| |
Thabazimbi Iron |
100,0 |
Proved |
10,3 |
61,2 |
9 @ 64,1% Fe |
15,2 |
60,9 |
13 @ 63,5% Fe |
|
| |
Ore Mine (17) |
|
Probable |
3,8 |
60,2 |
3 @ 63,6% Fe |
1,2 |
61,5 |
1 @ 64,1% Fe |
|
| |
|
|
Total |
14,1 |
60,9 |
13
@ 63,9% Fe |
16,3 |
60,9 |
14
@ 63,5% Fe |
(13,44) |
| |
Sishen South (18) |
100,0 |
Proved |
100,5 |
64,8 |
N/A |
|
|
|
|
|
|
| |
|
|
Probable |
66,4 |
63,3 |
N/A |
|
|
Not reported in
2004 |
|
| |
|
|
Total |
166,9 |
64,2 |
N/A |
|
|
|
|
|
|
| |
|
|
|
|
|
Coking |
Thermal |
Metall |
|
|
Coking |
Thermal |
Metall |
|
| |
|
|
|
|
|
coal |
coal |
coal |
|
|
coal |
coal |
coal |
|
| Coal |
Grootegeluk Coal Mine (19) |
100,0 |
Proved |
673 |
|
41,9 |
245 |
38,4 |
706 |
|
35,1 |
264 |
40,0 |
|
| |
|
|
Probable |
67 |
|
6,3 |
25 |
0,7 |
67 |
|
5,0 |
26 |
0,7 |
|
| |
|
|
Total |
740 |
|
48,2 |
270 |
39,2 |
773 |
|
40,1 |
290 |
40,7 |
(4,32) |
| |
Leeuwpan Coal Mine (20) |
100,0 |
Proved |
95,1 |
|
N/A |
45,8 |
111,2 |
|
N/A |
56,9 |
|
|
| |
|
|
Probable |
47,6 |
|
N/A |
27,1 |
47,6 |
|
N/A |
23,2 |
|
|
| |
|
|
Total |
142,7 |
|
N/A |
72,9 |
158,8 |
|
N/A |
80,1 |
|
(10,12) |
| |
Tshikondeni Coal Mine (21) |
100,0 |
Proved |
6,9 |
|
3,6 |
N/A |
7,1 |
|
4,1 |
N/A |
|
|
| |
|
|
Probable |
|
|
|
N/A |
|
|
|
N/A |
|
|
| |
|
|
Total |
6,9 |
|
3,6 |
N/A |
7,1 |
|
4,1 |
N/A |
|
(3,00) |
| |
|
|
|
|
|
A-grade export steam
coal |
|
|
A-grade export steam coal |
|
| |
Inyanda Coal |
50,0 |
Proved |
14,6 |
|
10,1 |
14,6 |
|
10,1 |
|
|
| |
|
|
Probable |
|
|
|
|
|
|
|
|
|
| |
|
|
Total |
14,6 |
|
10,1 |
14,6 |
|
10,1 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
| |
|
|
|
|
|
2005 |
|
|
|
|
|
2004 |
|
|
|
| |
|
% |
|
ROM |
|
|
|
|
|
ROM |
|
|
|
|
|
|
| |
|
attributable |
Reserve |
tonnes |
|
Total heavy
mineral (THM) |
tonnes |
|
Total heavy mineral
(THM) |
% |
| Commodity
|
Operation |
to Kumba |
category |
(million) |
Grade |
composition |
(million) |
Grade |
composition |
change |
| |
|
|
|
|
|
THM composition |
|
|
|
|
THM composition |
|
|
| |
|
|
|
|
% THM |
% Ilm |
% Rut |
% Zir |
% Leu |
|
% THM |
% Ilm |
% Rut |
% Zir |
% Leu |
|
| Heavy minerals |
Hillendale Mine (22) |
100,0 |
Proved |
30,0 |
6,9 |
60 |
3,6 |
8 |
1,6 |
41,4 |
6,6 |
58 |
|
|
|
|
| |
(excluding Braeburn) |
|
Probable |
|
|
|
|
|
|
|
|
|
3,2 |
7 |
0,9 |
|
| |
|
|
Total |
30,0 |
6,9 |
60 |
3,5 |
8 |
1,6 |
41,4 |
6,6 |
58 |
3,2 |
7 |
0,9 |
(27,53) |
| |
Fairbreeze |
100,0 |
Proved |
137,4 |
6,1 |
60 |
3,1 |
8 |
1,4 |
137,9 |
6,1 |
60 |
|
|
|
|
| |
A+B+C+C Ext (23) |
|
Probable |
44,1 |
7,2 |
61 |
3,4 |
8 |
1,8 |
20,4 |
4,2 |
49 |
3,3 |
8 |
1,6 |
|
| |
|
|
Total |
181,5 |
6,4 |
60 |
3,3 |
8 |
1,7 |
158,3 |
5,9 |
59 |
3,3 |
8 |
1,6 |
14,67 |
| |
Gravelotte sand |
100,0 |
Proved |
52,4 |
13,0 |
85 |
N/A |
N/A |
N/A |
52,4 |
13,0 |
85 |
N/A |
N/A |
N/A |
|
| |
|
|
Probable |
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
Total |
52,4 |
13,0 |
85 |
N/A |
N/A |
N/A |
52,4 |
13,0 |
85 |
N/A |
N/A |
N/A |
|
| |
Tiwest, Australia |
50,0 |
Proved |
25,0 |
3,7 |
60 |
4,8 |
10 |
2,7 |
43 |
2,9 |
60 |
4,5 |
10 |
3,0 |
|
| |
Cooljarloo |
|
Probable |
149,0 |
2,7 |
61 |
4,5 |
10 |
3,1 |
131 |
2,5 |
61 |
4,1 |
10 |
3,4 |
|
| |
|
|
Total |
174,0 |
2,8 |
61 |
4,6 |
10 |
3,0 |
174,0 |
2,6 |
61 |
4,2 |
10 |
3,3 |
|
| |
Tiwest, Australia |
50,0 |
Proved |
|
|
|
|
|
|
13,9 |
6,3 |
55 |
8,4 |
11 |
2,1 |
|
| |
Jurien (24) |
|
Probable |
15,7 |
7,9 |
54 |
6,8 |
10 |
2,3 |
1,9 |
6,6 |
54 |
6,1 |
7 |
1,6 |
|
| |
|
|
Total |
15,7 |
7,9 |
54 |
6,8 |
10 |
2,3 |
15,8 |
6,3 |
55 |
8,1 |
11 |
2,1 |
(0,63) |
| |
Ticor, Australia |
100,0 |
Proved |
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
Dongara (25) |
|
Probable |
20,2 |
10,2 |
50 |
6,7 |
9 |
1,3 |
22,1 |
10,0 |
48 |
7,0 |
10 |
2,0 |
|
| |
|
|
Total |
20,2 |
10,2 |
50 |
6,7 |
9 |
1,3 |
22,1 |
10,0 |
48 |
7,0 |
10 |
2,0 |
(8,60) |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
| |
|
|
|
|
|
2005 |
|
|
|
|
|
2004 |
|
|
|
| |
|
% |
|
ROM |
|
|
|
|
ROM |
|
|
|
|
|
|
| |
|
attributable |
Reserve |
tonnes |
|
Saleable |
tonnes |
|
|
Saleable |
% |
| Commodity |
Operation |
to Kumba |
category |
(million) |
Grade |
product |
(million) |
Grade |
product |
change |
| |
|
|
|
|
|
Zn |
|
Pb |
|
|
|
Zn |
|
Pb |
|
| |
|
|
|
|
|
metal |
|
metal |
|
|
|
metal |
|
metal |
|
| |
|
|
|
|
% Zn |
% Pb |
(kt) |
|
(kt) |
|
% Zn |
% Pb |
(kt) |
|
(kt) |
|
| Base |
Rosh Pinah Mine (26) |
89,5 |
Proved |
2,7 |
11,1 |
2,4 |
300 |
|
65 |
1,0 |
9,5 |
2,7 |
91 |
|
26 |
|
| metals |
(zinc and lead) |
|
Probable |
1,9 |
7,7 |
2,3 |
148 |
|
44 |
2,7 |
10,9 |
2,6 |
299 |
|
72 |
|
| |
|
|
Total |
4,6 |
9,7 |
2,4 |
448 |
|
110 |
3,7 |
10,6 |
2,7 |
390 |
|
98 |
24,81 |
| |
|
|
|
|
|
Metallurgical |
|
|
|
Metallurgical |
|
| |
|
|
|
|
% SiO2 |
dolomite (Mt) |
|
% SiO2 |
dolomite (Mt) |
|
| Industrial |
Glen Douglas |
100,0 |
Proved |
40,3 |
<2,5 |
|
38,3 |
|
33,8 |
<2,5 |
|
N/A |
|
|
| minerals |
Dolomite Mine(27) |
|
Probable |
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
Total |
40,3 |
<2,5 |
|
38,3 |
|
33,8 |
<2,5 |
|
N/A |
|
19,28 |
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
Bridgetown |
50,0 |
Proved |
7,3 |
~1,0 |
|
4,0 |
|
7,7 |
~1,0 |
|
4,6 |
|
|
| |
Dolomite Mine(28) |
|
Probable |
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
Total |
7,3 |
~1,0 |
|
4,0 |
|
7,7 |
~1,0 |
|
4,6 |
|
(5,85) |
| |
|
|
|
|
|
Aggregate (Mt) |
|
|
|
Aggregate (Mt) |
|
| |
Glen Douglas |
100,0 |
Proved |
13,0 |
Raw dolomite |
|
12,3 |
|
12,2 |
Raw dolomite |
|
N/A |
|
|
| |
Dolomite Mine(27) |
|
Probable |
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
Total |
13,0 |
Raw dolomite |
|
12,3 |
|
12,2 |
Raw dolomite |
|
N/A |
|
|
| |
Bridgetown |
50,0 |
Proved |
|
Plant fines |
|
3,3 |
|
|
Plant fines |
|
3,1 |
|
|
| |
Dolomite Mine(28) |
|
Probable |
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
Total |
|
Plant fines |
|
3,3 |
|
|
Plant fines |
|
3,1 |
|
5,93 |
The tonnages are quoted in metric tonnes and million tonnes is abbreviated
as Mt.
Rounding of figures may cause computational discrepancies.
Figures reported at 100% irrespective of percentage attributable to
Kumba.
Note that ALL operations and projects were externally audited
in 2005 as part of the Kumba/Newco due diligence process.
16
|
Ore reserves have increased significantly (42%)
by the inclusion of jig plant ore (only DMS plant ore was reported
in 2004). Note that 492Mt of the total mineral resource is banded
iron formation (BIF) material of which about 55% can be blended
for the jig plant; the remainder will be stockpiled. All stockpiled
BIF at the end of the mines life is excluded from the reported
ore reserves. The 2005 total saleable product comprises the following:
600Mt @ 65,7% Fe from the DMS plant and 243Mt @ 64,0% Fe from the
jig plant. |
17
|
Mining depletion of 3Mt accounts for most of
the decrease in ore reserves. 2,95Mt inferred mineral resources
are included in the pit shells these are not included in
the ore reserve figures reported. |
| 18 |
Not reported in 2004. Estimates are for a 9Mt
per annum open-pit operation. |
| 19 |
There is a 7,8Mt increase in the saleable coking
coal and 20,2Mt decrease in the saleable thermal coal tonnages due
to a re-configuration of the beneficiation capabilities of Grootegeluk
mine to create a higher-value product. |
20
|
The reserve estimate includes 53,4Mt proved and
16,2Mt probable coal reserves that occur in an area where prospecting
rights are under appeal. These reserves are quoted pending the outcome
of the appeal (SAMREC 5.5.1). The decrease in coal resources resulted
in a concomitant decrease in coal reserves. |
| 21 |
Coal reserves formerly reported for a portion
not included in the mine lease area have been excluded (0,2Mt) from
the 2005 estimate. |
22
|
Mining depletion (8,2Mt) and modification of
the mining boundary in relation to the mining fence (2,2Mt) explain
the decrease in ore reserves from 2004 to 2005. Leucoxene was not
reported in 2004. |
23
|
Fairbreeze C Ext is included pending the approval
of the mining right application. As the mining right has not yet
been granted, the measured mineral resources have been converted
to probable ore reserves (SAMREC 5.1.1). Note that Fairbreeze C
Ext ore reserves were estimated using a cut-off of 3% ilmenite not
the 1,5% ilmenite used for Fairbreeze C. All valuable heavy minerals
for Fairbreeze C and C Ext. and ilmenite for Fairbreeze A and B
can be estimated with the highest confidence (proved). Fairbreeze
A and B zircon, rutile and leucoxene are estimated with lower confidence
(probable). Therefore, the 2005 proved and probable grades for zircon,
rutile and leucoxene relate to 17Mt and 164Mt respectively. Leucoxene
was not reported in 2004. |
| 24 |
Proved ore reserves have been downgraded to probable
ore reserves with the updating of the geological models and new
mineral resource estimates. |
| 25 |
Reported as Magnetic Minerals in 2004. |
26
|
Mining depletion (0,6Mt) and the addition of
ore reserves from the conversion of mineral resources delineated
during the intensive exploration programme in 2005 explain the increase
in ore reserves at Rosh Pinah in 2005. |
| 27 |
The deepening and subsequent redesign of the
pit resulted in increases of 7,7Mt (metallurgical) and 1,2Mt (aggregate)
dolomite reserves. |
28
|
The ore reserve was depleted by mining activities
(0,3Mt), however, changes in saleable tonnes are due to an increase
in fines production at the plant. Note the 2004 saleable aggregate
tonnage was incorrectly reported as 3,9Mt instead of 3,1Mt. |
|