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INVENTORIES (Tables)
 12 Months Ended
Dec. 31, 2018
INVENTORIES [Abstract]  
Inventories



 

 

 

 

 

 

 



 

 

 

 

 

 

 

in thousands

2018

 

 

2017

 

Inventories

 

 

 

 

 

Finished products  1

$      372,604 

 

 

$     327,711 

 

Raw materials

 27,942 

 

 

 27,152 

 

Products in process

 3,064 

 

 

 1,827 

 

Operating supplies and other

 25,720 

 

 

 27,648 

 

Total

$      429,330 

 

 

$     384,338 

 





 

1

Includes inventories encumbered by volumetric production payments (see Note 2), as follows: December 31, 2018 — $3,230 thousand and December 31, 2017 — $2,808 thousand.