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Inventories
9 Months Ended
Mar. 31, 2021
Inventory Disclosure [Abstract]  
INVENTORIES INVENTORIES
We used the last-in, first-out (LIFO) method of valuing inventories for 39 percent and 43 percent of total inventories at March 31, 2021 and June 30, 2020, respectively. Inventory valuations under the LIFO method are based on an annual determination of quantities and costs as of June 30 of each year; therefore, the interim LIFO valuations are based on our projections of expected year-end inventory levels and costs and are subject to any final year-end LIFO inventory adjustments.
Inventories consisted of the following: 
(in thousands)March 31, 2021
June 30, 2020
Finished goods$305,478 $318,071 
Work in process and powder blends167,272 190,041 
Raw materials68,364 75,589 
Inventories at current cost541,114 583,701 
Less: LIFO valuation(64,950)(61,254)
Total inventories$476,164 $522,447