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6. INVENTORIES
12 Months Ended
Dec. 31, 2017
Inventories Abstract  
INVENTORIES
6.INVENTORIES

 

      Consolidated
  12/31/2017    12/31/2016 
Finished goods 1,308,802   1,183,619
Work in progress 1,135,589   674,860
Raw materials 1,050,588   1,124,158
Spare parts 814,725   824,478
Iron ore 278,041   255,029
Advances to suppliers 12,514   3,168
(-) Provision for losses         (135,840)           (101,176)
         4,464,419   3,964,136

 

The movements in the provision for inventory losses are as follows:

 

        Consolidated
    12/31/2017   12/31/2016
Opening balance       (101,176)   (111,427)
Reversal / (losses) for slow-moving and obsolescence         (34,664)   10,251
Closing balance       (135,840)   (101,176)