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Property, plant and equipment (Tables)
6 Months Ended
Jun. 30, 2023
Property, plant and equipment  
Schedule of estimated useful lives reconciliation of carrying amount

    

Freehold land

    

Plant and

    

Right-of-use

    

Mine

    

US$ thousand

and buildings

equipment

assets

development

Total

Cost

 

  

 

  

 

  

 

  

 

  

Balance at 1 January 2023

 

 

 

 

 

Acquired through business combination

 

1,128

 

306,381

 

398

 

946,766

 

1,254,673

Additions

 

 

564

 

15,733

 

1,698

 

17,995

Disposals

 

 

(16,564)

 

 

 

(16,564)

Balance at 30 June 2023

 

1,128

 

290,381

 

16,131

 

948,464

 

1,256,104

Accumulated depreciation

 

  

 

  

 

  

 

  

 

  

Balance at 1 January 2023

 

 

 

 

 

Depreciation for the period

 

16

 

1,146

 

131

 

1,908

 

3,201

Balance at 30 June 2023

 

16

 

1,146

 

131

 

1,908

 

3,201

Carrying amounts

 

  

 

  

 

  

 

  

 

  

At 1 January 2022

 

 

 

 

 

At 31 December 2022

 

 

 

 

 

At 30 June 2023

 

1,112

 

289,235

 

16,000

 

946,556

 

1,252,903