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Inventories (Tables)
9 Months Ended
May 31, 2019
Inventory, Net [Abstract]  
Inventories

Inventories consisted of the following (in thousands):
 
May 31, 2019
 
August 31, 2018
Processed and unprocessed scrap metal
$
90,839

 
$
111,658

Semi-finished goods
9,293

 
15,551

Finished goods
58,554

 
39,809

Supplies
43,506

 
38,859

Inventories
$
202,192

 
$
205,877