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Sales contracts (Tables)
12 Months Ended
Dec. 31, 2022
Sales contracts [Abstract]  
Schedule of uranium sales contracts over the next five years
   Sales Commitments in Pounds 
Fiscal 2023   500,000 
Fiscal 2024   600,000 
Fiscal 2025   700,000 
Fiscal 2026   700,000 
Fiscal 2027   650,000