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Inventories (Tables)
12 Months Ended
Jun. 30, 2021
Inventory Disclosure [Abstract]  
Inventories
Inventories consisted of the following at June 30: 
(in thousands)20212020
Finished goods$302,524 $318,071 
Work in process and powder blends173,671 190,041 
Raw materials72,551 75,589 
Inventories at current cost548,746 583,701 
Less: LIFO valuation(72,401)(61,254)
Total inventories$476,345 $522,447