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Inventories
 12 Months Ended
Nov. 30, 2018
Inventory Disclosure [Abstract]  
Inventories Inventories

The following table summarizes the Company's inventories:
 
November 30,
 
2019
 
2018
 
(Dollars in millions)
Raw materials and supplies
$
31.4

 
$
35.0

Work-in-process
4.7

 
5.3

Finished goods
66.6

 
63.5

Inventories, gross
102.7

 
103.8

LIFO reserve
(15.1
)
 
(18.1
)
Obsolescence reserve
(6.1
)
 
(6.9
)
Inventories, net
$
81.5

 
$
78.8


 
Inventories valued using the last-in, first out ("LIFO") method, represented $48.4 million, or 47.2%, and $47.6 million, or 45.9%, of inventories at November 30, 2019 and 2018, respectively.