Commercial production at the CMA underground operation is due to commence in March 2027. Credit: RHJPhtotos/Shutterstock.com. Perseus Mining has secured a presidential decree for the development and operation of the CMA underground project at its Yaouré Gold Mine in Côte d’Ivoire. Infrastructure works for the CMA underground mine are complete, and decline development will now begin following the commissioning of underground mining equipment by Perseus’ specialist contractor, Byrnecut. The next key milestone for the CMA underground operation is first ore production, targeted for January 2026. Earlier this year, the company took a final investment decision on the development of the CMA underground project.