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Property, Plant and Equipment
 12 Months Ended
Dec. 31, 2018
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment

6    Property, Plant and Equipment

Property, plant and equipment consist of the following (in thousands):

 

     December 31,  
     2018     2017  

Land and land improvements

    $ 36,554     $ 37,525  

Buildings and leasehold improvements

      299,103       294,219  

Production and other equipment

      494,302       484,475  

Construction in progress

      41,909       22,140  
  

 

 

    

 

 

  

Total property, plant and equipment

      871,868       838,359  

Less: accumulated depreciation and amortization

      (528,785 )      (489,081 ) 
  

 

 

    

 

 

  

Property, plant and equipment, net

    $ 343,083     $ 349,278  
  

 

 

    

 

 

  

In February 2018, the Company’s Board of Directors approved expanding its precision chemistry consumable manufacturing operations in the U.S. The Company anticipates spending an estimated $215 million to build and equip this new state-of-the-art manufacturing facility, and has spent $11 million on this facility through December 31, 2018.

During 2018, 2017 and 2016, the Company retired and disposed of approximately $9 million, $15 million and $15 million of property, plant and equipment, respectively, most of which was fully depreciated and no longer in use. Gains on disposal were immaterial for the years ended December 31, 2018 and 2017.