Table 1
– Headline Numbers: Gold Fields Limited Mineral Resource and Mineral
Reserve summary as at 31 Dec 2011
Total: Operating mines (including Cu as Au
equivalents & TSF Au)
Mineral Resources
Mineral Reserves
31 December
2011
December
2010
31 December
2011
December
2010
Tonnes
(Mt)
All Metal
EqOz
(Moz)
All Metal
EqOz
(Moz)
Tonnes
(Mt)
All Metal
EqOz
(Moz)
Managed
1749.1
202.2
208.8
1062.4
85.1
81.0
Attributable
1
1667.1
193.4
202.3
1011.0
80.6
76.7
Totals including platinum and gold
equivalents (from Cu, Ag & Mo), excl
Woodjam
Tonnes
(Mt)
All Metal
EqOz
(Moz)
All Metal
EqOz
(Moz)
Tonnes
(Mt)
All Metal
EqOz
(Moz)
All Metal
EqOz
(Moz)
Managed
2475.8
234.4
239.5
1062.4
85.1
81.0
Attributable
1
2158.2
217.0
225.4
1011.0
80.6
76.7
1
During 2011 the Gold Fields attributable portion of Mineral Resources and Mineral Reserves for Tarkwa and Damang have
increased from 71.1% to 90% following the buyout of the IAMGold share. Similarly, the purchase of the minority shareholders equity
in Cerro Corona has increased the Group’s attributable portion of Mineral Resources and Mineral Reserves from 80.7% to 98.5%.
The commodity prices used for the Mineral Reserve and Mineral Resource declaration are in
accordance with SEC guidelines and approximate to the historical three year trailing average
commodity prices. Metal price assumptions used for evaluating Gold Fields Mineral Reserves
are as follows: US$1,300/oz (Dec 2010: US$1,000/oz) for gold and US$3.50/lb (Dec 2010:
US$2.72/lb) for copper. Price assumptions for Mineral Resources are: US$1,450/oz (Dec
2010: US$1,100/oz) for gold and US$3.90/lb (Dec 2010: US$3.00) for copper. A complete list
of price assumptions are contained in Table 2 below.
Key highlights for the Mineral Resource and Mineral Reserve statement in our four Regions
and for our Growth Projects are as follows:
·
The Mineral Resource position in the West Africa region has increased by 46% from
17.3 million ounces to 25.2 million ounces net of depletion, primarily due to the
increase in the gold price and discovery at the Greater Damang Project (Huni, Juno
and Damang main pit). The total Mineral Reserve has increased by 21% from 11.3
million ounces to 13.7 million ounces, net of mine depletion. After taking depletion
into account the Mineral Reserve at Tarkwa increased from 9.2 million ounces to 10.3
million ounces, mainly due to the rise in the gold price. The Mineral Reserves at
Damang increased from 2.1 million ounces to 3.4 million ounces net of depletion.
This is primarily due to the increase in the Mineral Reserves for the Greater Damang
Project from 1.1 million ounces to 2.5 million ounces.
·
In the South Africa region Mineral Resources declined by 8% to 160.2 million ounces
(173.8 million ounces), due to pay limit increases, resource clean-up and changes in
geological models. The total Mineral Reserve base has increased by 2%, net of
depletion, primarily due to an increase of 5.2 million ounces at South Deep and the
first-time inclusion of 2.9 million ounces gold reserves from the West Wits Tailings
Treatment Project (WWTTP). This is partially offset by a 3.7 million ounce reduction