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Other operating income and expenses (Tables)
 3 Months Ended
Mar. 31, 2021
Other operating income and expenses [Abstract]  
Other operating income
The table below shows the detail of Other operating income and expenses for the three-month periods ended March 31, 2021, and 2020:

Other Operating income
 
For the three-month period ended March 31,
 
  
2021
  
2020
 
  
($ in thousands)
 
Grants (Note 16)
  
14,715
   
14,751
 
Insurance proceeds and other
  
6,518
   
14,787
 
Total
  
21,233
   
29,538
 
Other operating expenses
Other Operating expenses
 
For the three-month period ended March 31,
 
  
2021
  
2020
 
  
($ in thousands)
 
Raw materials and consumables used
  
(1,932
)
  
(2,208
)
Leases and fees
  
(654
)
  
(660
)
Operation and maintenance
  
(37,117
)
  
(26,791
)
Independent professional services
  
(7,634
)
  
(10,444
)
Supplies
  
(6,005
)
  
(5,587
)
Insurance
  
(10,515
)
  
(9,204
)
Levies and duties
  
(9,666
)
  
(8,904
)
Other expenses
  
(1,747
)
  
(2,017
)
Total
  
(75,270
)
  
(65,815
)