6
March 2016 Quarter Gold Fields Trading Statement and Operating Update
Net operating costs, including gold-in-process movements,
decreased by 15 per cent from US$39 million to US$33 million
mainly due to higher planned maintenance at the processing plant
in the December quarter.
Capital expenditure decreased by 82 per cent from US$28 million
to US$5 million due to timing and less construction activities at the
tailings dam as a result of the rainy season. In addition, the
construction of the new camp was completed.
All-in sustaining costs and total all-in cost decreased by 70 per cent
from US$1,285 per ounce in the December quarter to US$386 per
ounce in the March quarter, mainly due to lower net operating costs
and capital expenditure and higher copper by-product credit. All-in
sustaining costs and total all-in costs per equivalent ounce
decreased by 34 per cent from US$1,073 per equivalent ounce to
US$709 per equivalent ounce mainly due to the same reasons as
above.
Australia region
St Ives
March
2016
Dec
2015
Gold produced
000’oz
87.0
100.4
Yield – underground
g/t
4.27
4.81
– surface
g/t
2.49
2.69
– combined
g/t
2.70
3.21
AISC and AIC
A$/oz
1,182
1,171
US$/oz
852
836
* Heap leach produced 400 ounces, rinsed from inventory (200 ounces was rinsed in the
December quarter).
Gold production decreased by 13 per cent from 100,400 ounces in
the December quarter to 87,000 ounces in the March quarter
primarily due to the closure of the Athena underground mine in
February 2016 and a build-up of gold in circuit.
Total tonnes mined increased by 44 per cent from 7.8 million tonnes
in the December quarter to 11.2 million tonnes in the March quarter.
At the underground operations, ore mined decreased by 25 per cent
from 237,000 tonnes in the December quarter to 178,000 tonnes in
the March quarter with the Athena mine closure in February. The
reduced tonnes were partially offset by a 3 per cent increase in
head grade from 5.16 grams per tonne to 5.29 grams per tonne.
At the open pit operations, total ore tonnes mined increased by 28
per cent from 660,000 tonnes in the December quarter to 844,000
tonnes in the March quarter. Grade mined decreased by 11 per
cent from 3.07 grams per tonne to 2.72 grams per tonne. The
increased tonnes and lower grade were primarily due to the lower
grade A5 open pit coming into production during the March quarter.
A5 is a small pit which is expected to supplement production while
the higher grade Neptune pit is being stripped.
Operational waste tonnes mined decreased by 24 per cent from 2.1
million tonnes in the December quarter to 1.6 million tonnes in the
March quarter. Capital waste tonnes mined increased by 79 per
cent from 4.8 million tonnes to 8.6 million tonnes. The strip ratio
increased from 10.4 to 12.1. The increased capital waste tonnes
mined were the result of the stripping campaigns at Neptune and
A5 which will complement the Invincible pit as St Ives moves to a
predominately open pit operation with the closure of the Athena
underground mine.
Throughput at the Lefroy mill increased by 2 per cent from 974,000
tonnes in the December quarter to 997,000 tonnes in the March
quarter with more open pit ore available for processing. Yield
decreased from 3.21 grams per tonne to 2.71 grams per tonne in
line with decreased open pit grades mined and an increase in gold
in circuit of 9,200 ounces. Gold production from the Lefroy mill
decreased from 100,200 ounces to 86,600 ounces.
Residual leaching and irrigation of the existing heap leach pad
continued and a further 400 ounces were produced in the March
quarter. This compared with 200 ounces produced in the
December quarter. Since cessation of stacking activities, a total of
24,800 ounces have been produced. This process will continue
until pregnant solutions become uneconomic.
Net operating costs, including gold-in-process movements,
decreased by 25 per cent from A$65 million (US$46 million) to A$49
million (US$35 million), mainly due to a A$10 million (US$7 million)
build-up of inventory in the March quarter compared with A$1
million (US$1 million) in the December quarter as well as reduced
ore tonnes mined.
Capital expenditure was similar at A$45 million (US$33 million).
All-in sustaining costs and total all-in cost increased by 1 per cent
from A$1,171 per ounce (US$836 per ounce) in the December
quarter to A$1,182 per ounce (US$852 per ounce) in the March
quarter due to decreased gold sold, partially offset by lower net
operating costs.
Agnew/Lawlers
March
2016
Dec
2015
Gold produced
000’oz
52.1
65.7
Yield g/t
5.70
6.88
AISC and AIC
A$/oz
1,536
1,160
US$/oz
1,106
828
Gold production decreased by 21 per cent from 65,700 ounces in
the December quarter to 52,100 ounces in the March quarter mainly
due to lower tonnes and grades mined as planned.
Ore mined from underground decreased by 19 per cent from
313,000 tonnes in the December quarter to 252,000 tonnes in the
March quarter due to lower ounces mined in the New Holland mine
as the mine transitions into the new Cinderella orebody. Head
grade mined decreased by 11 per cent from 7.25 grams per tonne
to 6.45 grams per tonne mainly due to higher grade areas being
mined in the New Holland mine in the December quarter.
Tonnes processed decreased by 5 per cent from 298,000 tonnes in
the December quarter to 284,000 tonnes in the March quarter due
to a planned maintenance shutdown in February. The combined
yield decreased from 6.88 grams per tonne to 5.70 grams per tonne