ANNUAL FINANCIAL STATEMENTS 2014
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Stockpiles, metals in process and ore on leach pad
Costs that are incurred in or benefit the production process are accumulated as stockpiles, metals in process and ore on
leach pads. Net realisable value tests are performed at least annually and represent the estimated future sales price of the
product, based on prevailing and long-term metals prices, less estimated costs to complete production and bring the
product to sale.
Stockpiles and underground metals in process are measured by estimating the number of tonnes added and removed
from the stockpile and from underground, the number of contained gold ounces based on assay data, and the estimated
recovery percentage based on the expected processing method. Stockpile and underground ore tonnages are verified by
periodic surveys.
Estimates of the recoverable gold on the leach pads are calculated from the quantities of ore placed on the pads based on
measured tonnes added to the leach pads, the grade of ore placed on the leach pads based on assay data and a recovery
percentage based on metallurgical testing and ore type.
Although the quantities of recoverable metal are reconciled by comparing the grades of ore to the quantities of gold
actually recovered (metallurgical balancing), the nature of the process inherently limits the ability to precisely monitor
recoverability levels. As a result, the metallurgical balancing process is constantly monitored and engineering estimates
are refined based on actual results over time.
Variations between actual and estimated quantities resulting from changes in assumptions and estimates that do not result
in write-downs to net realisable value are accounted for on a prospective basis.
The carrying amount of inventories (excluding finished goods and mine operating supplies) for the group at
31 December 2014 was $1,106m (2013: $1,125m; 2012: $1,309m).
Recoverable tax, rebates, levies and duties
In a number of countries, particularly in Continental Africa, AngloGold Ashanti Limited is due refunds of indirect tax which
remain outstanding for periods longer than those provided for in the respective statutes.
In addition, AngloGold Ashanti Limited has unresolved tax disputes in a number of countries, particularly in Continental
Africa and in Brazil. If the outstanding input taxes are not received and the tax disputes are not resolved in a manner
favourable to AngloGold Ashanti Limited, it could have an adverse effect upon the carrying value of these assets.
The carrying value of recoverable tax, rebates, levies and duties for the group at 31 December 2014 was $169m
(2013: $229m; 2012: $243m).
Pension plans and post-retirement medical obligations
The determination of AngloGold Ashanti Limited’s obligation and expense for pension and provident funds, as well as
post-retirement health care liabilities, depends on the selection of certain assumptions used by actuaries to calculate
amounts. These assumptions include, among others, the discount rate, the expected long-term rate of return of plan
assets, health care inflation costs, rates of increase in compensation costs and the number of employees who reach
retirement age before the mine reaches the end of its life. While AngloGold Ashanti Limited believes that these
assumptions are appropriate, significant changes in the assumptions may materially affect pension and other post-
retirement obligations as well as future expenses, which may result in an impact on earnings in the periods that the
changes in these assumptions occur.
The carrying value of the defined benefit plans (including the net asset position disclosed under non-current assets) at
31 December 2014 was $122m (2013: $111m; 2012: $221m).
Ore Reserve estimates
An Ore Reserve estimate is an estimate of the amount of product that can be economically and legally extracted from the
group’s properties. In order to calculate the Ore Reserve, estimates and assumptions are required about a range of
geological, technical and economic factors, including quantities, grades, production techniques, recovery rates, production
costs, transport costs, commodity demand, commodity prices and exchange rates.
Estimating the quantity and/or grade of the Ore Reserve requires the size, shape and depth of orebodies to be determined
by analysing geological data such as the logging and assaying of drill samples. This process may require complex and
difficult geological judgements and calculations to interpret the data.
The group is required to determine and report its Ore Reserve in accordance with the SAMREC code.