In ‘landmark’ moment, Diavik’s final closure plan is approved – Cabin Radio

March 2, 2026

Regulators have approved a final closure and reclamation plan for the NWT’s Diavik diamond mine, a moment described as a territorial and global first.

Though Diavik is by no means the first mine in the NWT to close, experts describe it as the first to do so according to a predetermined schedule and with a full closure plan in place.

Commercial operations are set to end later this month. Active closure work will take until roughly 2029, followed by monitoring that could last into the 2040s.