XML 525 R71.htm IDEA: XBRL DOCUMENT v3.22.4
ENVIRONMENTAL REHABILITATION AND OTHER PROVISIONS (Tables)
12 Months Ended
Dec. 31, 2022
Disclosure of other provisions, contingent liabilities and contingent assets [Abstract]  
Disclosure of Environmental Rehabilitation and Other Provisions
US Dollars
Figures in millions202220212020
Environmental rehabilitation obligations
Provision for decommissioning
Balance at beginning of year215 219 196 
Charge to income statement — 
Change in estimates(1)
(55)(8)17 
Unwinding of decommissioning obligation5 
Translation(3)(2)
Balance at end of year162 215 219 
Provision for restoration
Balance at beginning of year458 440 423 
Charge to income statement(8)(3)
Change in estimates(1)
(36)29 15 
Additions2 — — 
Unwinding of restoration obligation12 
Utilised during the year(8)(10)(11)
Translation(4)(4)
Balance at end of year416 458 440 
Provision for silicosis
Balance at beginning of year34 4954
Change in estimates(1)1
Transfer (to) from short term provisions included in trade, other payables and provisions2 (5)(1)
Unwinding of silicosis provision3 34
Utilised during the year(15)(10)(9)
Translation (4)(3)
Balance at end of year23 3449
Other provisions(2)
Balance at beginning of year22 23 24 
Charge to income statement20 14 12 
Change in estimates2 — 
Transfer (to) from short term provisions included in trade, other payables and provisions(5)(7)
Utilised during the year(6)(6)(13)
Translation (2)(4)
Balance at end of year33 22 23 
Total environmental rehabilitation and other provisions634 729 731 
Sensitivity analysis - Provision for decommissioning (3)
A change in discount rates and cash flows have a significant impact on the amounts recognised in the statement of financial position. A 10% change in the discount rate and cash flows would have the following impact:
Effect of increase in assumptions:
10% change in discount rate(7)(5)(3)
10% change in cash flows16 21 22 
Effect of decrease in assumptions:
10% change in discount rate8 
10% change in cash flows(16)(21)(22)
Sensitivity analysis - Provision for restoration (3)
A change in discount rates and cash flows have a significant impact on the amounts recognised in the income statement. A 10% change in the discount rate and cash flows would have the following impact:
Effect of increase in assumptions:
10% change in discount rate(10)(5)(3)
10% change in cash flows42 46 44 
Effect of decrease in assumptions:
10% change in discount rate10 
10% change in cash flows(42)(46)(44)
Sensitivity analysis - Provision for silicosis (3)
Significant judgements are applied in estimating the costs required to settle any qualifying silicosis claims and is based on certain assumptions which includes the number of claimants, take-up rates and disease progression rates. A 10% change in these assumptions would have the following impact:
Effect of increase in assumptions:
10% change in take-up rates6 
10% change in number of cases6 
10% change in disease progression rate4 
Effect of decrease in assumptions:
10% change in take-up rates(6)(6)(6)
10% change in number of cases(6)(6)(6)
10% change in disease progression rate(4)(3)(3)

(1)The change in estimates is attributable to changes in discount rates due to changes in global economic assumptions and changes in mine plans resulting in a change in cash flows and changes in design of tailings storage facilities and in methodology following requests from the environmental regulatory authorities. These provisions are expected to unwind beyond the end of the life of mine.

(2)Other provisions comprises claims filed by former employees in respect of loss of employment, work-related accident injuries and diseases, governmental fiscal claims relating to levies, surcharges and environmental legal disputes and a shareholder claim related to stamp duties. These liabilities are expected to be settled over the next two-to five-year period.

(3)The sensitivity analysis is based on the change of a single assumption, keeping all other assumptions constant. This may not be the case in practice where changes in assumptions may result in correlated changes in other assumptions, and a change in the provision amount.


Environmental obligations

Pursuant to environmental regulations in the countries in which we operate, in connection with plans for the eventual end-of-life of our mines, we are obligated to rehabilitate the lands where such mines are located. In most cases, AngloGold Ashanti is required to provide financial guarantees for such work, including reclamation bonds or letters of credit issued by third party entities, independent trust funds or cash reserves maintained by the operation, to the respective environmental protection agency, or such other government department with responsibility for environmental oversight in the respective country, to cover the estimated environmental rehabilitation obligations.

In most cases, the environmental obligations will expire on completion of the rehabilitation although, in some cases, we may be required to post bonds for potential events or conditions that could arise after the rehabilitation has been completed.

In Australia, since 2014, we have paid into a Mine Rehabilitation Fund an amount of AUD $11.2m for a current carrying value of the liability of AUD $107.4m. At Iduapriem, we have provided a bond comprising of a cash component of $11.8m with a further bond guarantee amounting to $14m issued by ABSA Bank Ghana Limited and Standard Chartered Bank Ghana Ltd for a current carrying value of the liability of $45.9m. At Obuasi, we have provided a bond comprising of a cash component of $21.54m with a further bank guarantee amounting to $30m issued by Stanbic Bank Ghana Limited and Standard Chartered Bank Ghana PLC for a current carrying value of the liability of $171.03m. In some circumstances we may be required to post further bonds in due course which will have a consequential income statement charge for the fees charged by the providers of the reclamation bonds.