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22. EXPENSES BY NATURE (Tables)
 12 Months Ended
Dec. 31, 2017
Expenses By Nature Tables  
Expenses by nature
EXPENSES BY NATURE

 

             
    12/31/2017   12/31/2016  

12/31/2015

Raw materials and inputs              (5,404,801)              (4,518,718)   (4,858,070)
 Labor cost                (2,400,579)              (2,482,111)              (1,887,735)
 Supplies              (1,451,437)              (1,384,437)              (1,095,576)
 Maintenance cost (services and materials)              (1,145,974)              (1,203,294)              (1,069,404)
 Outsourcing services              (3,424,439)              (3,492,520)              (3,284,238)
 Depreciation, amortization and depletion (Note 11 a) (1,408,765)             (1,278,816)             (1,130,869) 
 Other                 (591,094)                 (495,274)                 (314,730)
             (15,827,089)            (14,855,170)            (13,640,622)
             
Classified as:            
 Cost of sales and services            (13,596,141)            (12,640,042)            (11,740,101)
 Selling expenses              (1,815,107)              (1,696,896)              (1,430,189)
General and administrative expenses                 (415,841)                 (518,232)                 (470,332)
             (15,827,089)            (14,855,170)            (13,640,622)
Depreciation, amortization and depletion

The depreciation, amortization and depletion additions for the year were distributed as follows:

 

      Consolidated
  12/31/2017   12/31/2016
       
Production costs 1,376,862   1,241,425
Sales expenses 8,851   9,163
General and Administrative Expenses 23,052   28,228
  1,408,765   1,278,816
Other operating expenses (*) 44,570   43,681
  1,453,335   1,322,497

 

(*) Refers mainly to the amortization of intangible assets, see note 23.