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Inventories
12 Months Ended
Jun. 30, 2018
Inventory Disclosure [Abstract]  
INVENTORIES
INVENTORIES
Inventories consisted of the following at June 30: 
(in thousands)
2018
 
2017
Finished goods
$
279,240

 
$
290,817

Work in process and powder blends
232,973

 
166,857

Raw materials
96,859

 
87,627

Inventories at current cost
609,072

 
545,301

Less: LIFO valuation
(83,606
)
 
(57,620
)
Total inventories
$
525,466

 
$
487,681


We used the LIFO method of valuing inventories for approximately 40 percent and 43 percent of total inventories at June 30, 2018 and 2017, respectively.