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Note 5 - Inventories (Tables)
3 Months Ended
Oct. 31, 2022
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
  

October 31, 2022

  

July 31, 2022

 

Material and supplies

 $218  $231 

Uranium concentrates from production

  178   178 

Purchased uranium inventories

  28,769   66,161 
  $29,165  $66,570 
Contractual Obligation, Fiscal Year Maturity [Table Text Block]
  

Purchase Commitments in Pounds

  

Total Purchase Price

 

Fiscal 2023

  1,505,000  $53,134 

Fiscal 2024

  895,000   38,913 

Fiscal 2025

  600,000   23,120 

Fiscal 2026

  100,000   3,620 

Total

  3,100,000  $118,787