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INVENTORIES AND SUPPLIES
3 Months Ended
Mar. 31, 2020
Inventory Disclosure [Abstract]  
INVENTORIES AND SUPPLIES INVENTORIES AND SUPPLIES
Inventories and supplies consisted of the following (in thousands):
 
March 31, 2020
 
December 31, 2019
Oil and oil related products
$
76,563

 
$
75,408

Supplies and drums
116,526

 
115,128

Solvent and solutions
9,763

 
9,973

Other
13,680

 
14,235

Total inventories and supplies
$
216,532

 
$
214,744


Supplies and drums consist primarily of drums and containers used in providing the Company's products and services as well as critical spare parts to support the Company's incinerator and re-refinery operations. Other inventories consisted primarily of parts washer components, cleaning fluids, absorbents and automotive fluids, such as windshield washer fluid and antifreeze.