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Prepayments and deposits
 6 Months Ended
Apr. 30, 2022
Prepayments And Deposits [Abstract]  
Prepayments and deposits Prepayments and deposits
April 30, 2022October 31, 2021
$$
Prepaid lease deposits1,406,347886,951
Prepaid equipment deposits19,845,9633,231,836
Prepaid insurance995,0273,839,880
Prepaid construction charges12,078,697—
Other prepaids3,879,422688,331
38,205,4568,646,998
Other prepaids consist principally of parts and consumables, deposits, subscriptions, and environmental financial assurance.