West Africa region
Ghana
Tarkwa
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June
2011 |
|
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Gold produced |
- 000’oz |
|
180.8 |
|
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Yield - heap leach |
- g/t |
|
0.6 |
|
0.5 |
|
| |
- CIL plant |
- g/t |
|
1.4 |
|
1.4 |
|
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- combined |
- g/t |
|
1.0 |
|
1.0 |
|
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Total cash cost |
- US$/oz |
|
606 |
|
534 |
|
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Notional cash expenditure |
- US$/oz |
|
869 |
|
889 |
|
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NCE margin |
- % |
|
41 |
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Gold production was steady quarter on quarter at 180,000 ounces.
Total tonnes mined, including capital stripping, was similar to the
June quarter at 28.8 million tonnes in the September quarter, despite
production being affected by excessive rainfall during the quarter.
Ore mined at 5.2 million tonnes was similar to the June quarter.
Mined grade at 1.24 grams per tonne was marginally higher than the
1.23 grams per tonne achieved during the June quarter.
The total feed to the CIL plant decreased from 2.92 million tonnes in
the June quarter to 2.84 million tonnes in the September quarter due
to a harder blend of ore processed. Yield was similar at 1.4 grams
per tonne. The CIL plant produced 131,000 ounces for the
September quarter compared with the 129,400 ounces in the June
quarter.
Total feed to the North and South heap leach pads decreased from
2.97 million tonnes to 2.76 million tonnes at a similar yield. The high
pressure grinding roller (HPGR) at the South heap leach processed
0.81 million tonnes, similar to the performance achieved during the
previous quarter. Feed to the North heap leach reduced from 2.15
million tonnes to 1.95 million tonnes due to mechanical failure of the
primary crusher, which as a result was non-operational for seven
days. The heap leach process produced 49,000 ounces, compared
with 51,400 ounces in the June quarter. The decrease was
attributable to the decreased tonnage stacked on both facilities.
Net operating costs increased from US$88 million (R596 million) in
the June quarter to US$102 million (R717 million) in the September
quarter. This increase was mainly due to a lower gold-in-process
credit of US$8 million (R55 million) in the September quarter
compared with a credit of US$21 million (R140 million) in the June
quarter. Total cash cost increased from US$534 per ounce in the
June quarter to US$606 per ounce in the September quarter, mainly
as a result of the lower gold-in-process credit and a higher royalty
payment due to the higher gold price received.
Operating profit increased from US$185 million (R1,257 million) to
US$206 million (R1,455 million).
Capital expenditure decreased from US$52 million (R354 million) in
the June quarter to US$47 million (R332 million) in the September
quarter, with the tailings dam expansion and pre-stripping being the
major expenditure items. The decreased expenditure this quarter
was due to the completion in the previous quarter of the acquisition of
additional mining fleet required for the year.
Notional cash expenditure decreased from US$889 per ounce to
US$869 per ounce due to the decrease in capital expenditure. The
NCE margin increased from 41 per cent to 49 per cent.
Damang
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June
2011 |
|
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Gold produced |
- 000’oz |
|
56.3 |
|
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Yield |
- g/t |
|
1.4 |
|
1.4 |
|
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Total cash cost |
- US$/oz |
|
651 |
|
660 |
|
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Notional cash expenditure |
- US$/oz |
|
1,107 |
|
876 |
|
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NCE margin |
- % |
|
42 |
|
Gold production decreased from 56,300 ounces in the June quarter
to 54,300 ounces in the September quarter mainly due to power
interruptions from the state utility infrastructure (ECG). Initiatives are
in place, due to the continual instability of the power supply, to
generate an on-mine power supply, as well as to reduce reliance on
the ECG by tying into the national grid.
Total tonnes mined, including capital stripping, increased from 5.7
million tonnes in the June quarter to 6.7 million tonnes in the
September quarter. This increase is in line with the strategy to
expose long-term ore reserves and to increase the delivery of fresh
ore to the mill. Ore mined at 1.2 million tonnes was similar to the
previous quarter.
Tonnes processed decreased marginally from 1.27 million tonnes in
the June quarter to 1.23 million tonnes in the September quarter as a
result of the power interruptions highlighted above.
Net operating costs decreased from US$34 million (R229 million) in
the June quarter to US$30 million (R214 million) in the September
quarter due to an increased gold-in-process credit. Total cash cost
decreased from US$660 per ounce to US$651 per ounce.
Operating profit increased from US$51 million (R348 million) in the
June quarter to US$63 million (R442 million) in the September
quarter as a result of the higher gold price received and lower
operating cost.
Capital expenditure increased from US$17 million (R113 million) in
the June quarter to US$26 million (R185 million) in the September
quarter, with pre-stripping, mining fleet acquisitions and US$6 million
spent on the Greater Damang pre-feasibility study being the major
items.
Notional cash expenditure increased from US$876 per ounce in the
June quarter to US$1,107 per ounce in the September quarter as a
result of the increased capital expenditure. The NCE margin
decreased from 42 per cent to 35 per cent.
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