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Plant and equipment (Tables)
6 Months Ended
Apr. 30, 2022
Disclosure of detailed information about property, plant and equipment [abstract]  
Summary of plant and equipment
Assets under constructionPlant equipmentComputer software and equipmentStorage containersVehiclesLeasehold improvementsTotal
$$$$$$$
Cost
At October 31, 2021
15,638,165 6,275,419196,27367,619179,2986,219,45628,576,230
Additions
43,648,651 12,622162,311 62,0001,278,25345,163,837
Transfers from Assets under construction(2,013,803)1,668,065 309,555 25,733 — 10,450 — 
At April 30, 2022
57,273,013 7,956,106668,13993,352241,2987,508,15973,740,067
Accumulated depreciation
At October 31, 2021
— (1,549,700)(8,645)(14,172)(49,314)(564,936)(2,186,767)
Depreciation— (741,003)(71,386)(4,454)(23,332)(310,606)(1,150,781)
At April 30, 2022
(2,290,703)(80,031)(18,626)(72,646)(875,542)(3,337,548)
Carrying amounts— 
At October 31, 2021
15,638,1654,725,719187,62853,447129,9845,654,52026,389,463
At April 30, 2022
57,273,0135,665,403588,10874,726168,6526,632,61770,402,519