Under the Act to amend theMining Act and other provisions¹ (the “Act”), assented to on November 29, 2024, certain amendments were made to the Mining Act.²

In this bulletin, we will focus on the rules that have been in effect as of the Act’s date of assent concerning the assignment of a mining lease or a mining concession, and those that have been in effect since November 29, 2025, concerning the transfer of an exclusive exploration right (“EER”), formerly known as a claim.