Abstract: Sustainable development and sustainability have become widely accepted as principles guiding the effort to balance the desires for economic growth and development, some form of social equity, and the maintenance of ecosystem integrity. Canada\'s Yukon Territory is a jurisdiction heavily reliant on mining and also committed to the principles of sustainability. Mining, like the use of other non-renewable resources, can be made to fit the still evolving. sustainability criteria. Economically sustainable use of minerals requires the collection and reinvestment of their economic rents in sustainable substitutes. Advances toward economic sustainability also mean improving environmental sustainability as environmental damage equals dissipated rents. The Yukon can improve the economic sustainability of its mining sector by: replacing its free-entry mineral allocation system, collecting rents more efficiently using a resource rent tax, reinvesting those rents in economic diversification, and enforcing the requirements for mine forcing the requirements for mine abandonment.