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Secured Note Liability (Tables)
12 Months Ended
Dec. 31, 2022
Disclosure Of Borrowings Text Block Abstract  
Schedule of inputs and assumptions
Inputs and assumptions  March 24,
2022
  December 31,
2022
Weighted Average Life 1    23.5 years  44.9 years
Forecast silver production in thousands of ounces   105,778  166,144
Future silver price   US$ 28.96 to US$35.42   US$ 29.38 to US$110.51
Risk-free rate   2.5%  3.4%
Credit spread   5.2%  5.3%
Volatility   60%  60%
Silver royalty discount factor   7.1%  8.6%

 

1)Weighted average life reflects the revised silver forecast production schedule contained in the recently filed KSM updated Preliminary Feasibility Study (“PFS”) and Preliminary Economic Assessment (“PEA”) for the KSM project filed in the second quarter of 2022

 

Schedule of carrying amount for the secured note
($000s)   Secured Note 
Fair value at inception   282,263 
Add (deduct):     
Unrealized change in fair value   (39,879)
Foreign currency translation loss   21,157 
Carrying value and fair value on December 31, 2022   263,541 

 

Schedule of fair value of the secured note
Key Inputs  Inter-relationship between significant inputs and fair value measurement 

Increase (decrease)

(millions)

 
Key observable inputs  The estimated fair value would increase (decrease) if:    
●   Silver price forward curve  ●   Future silver prices were 10% higher  $9.7 
   ●   Future silver prices were 10% lower  $(9.8)
●   Discount rates (7.6% - 9.6%)  ●   Discount rates were 1% higher  $(16.1)
   ●   Discount rates were 1% lower  $18.7 
Key unobservable inputs        
●   Forecasted silver production  ●   Silver production indicated silver ounces were 10% higher  $9.7 
   ●   Silver production indicated silver ounces were 10% lower  $(9.8)