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Other operating income and expenses (Tables)
 3 Months Ended
Mar. 31, 2020
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, 2020, and 2019:

Other Operating income
 
For the three-month period ended March 31,
 
  
2020
  
2019
 
  
($ in thousands)
 
Grants (Note 16)
  
14,751
   
14,789
 
Income from various services and insurance proceeds
  
14,787
   
11,650
 
Total
  
29,538
   
26,439
 
Other operating expenses
Other Operating expenses
 
For the three-month period ended March 31,
 
  
2020
  
2019
 
  
($ in thousands)
 
Raw materials and consumables used
  
(2,208
)
  
(2,913
)
Leases and fees
  
(660
)
  
(731
)
Operation and maintenance
  
(26,790
)
  
(33,817
)
Independent professional services
  
(10,444
)
  
(8,833
)
Supplies
  
(5,587
)
  
(6,865
)
Insurance
  
(9,204
)
  
(6,112
)
Levies and duties
  
(8,904
)
  
(3,069
)
Other expenses
  
(2,017
)
  
(1,146
)
Total
  
(65,815
)
  
(63,486
)