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Gord Stephenson oversees the closure of the Diavik diamond mine, which involves remediation and monitoring efforts lasting over a decade. After mining ends, the site will undergo three to four years of cleanup, with some materials repurposed and hazardous waste transported for disposal.

The closure poses economic challenges for NWT, where diamond mining contributed $1.2 billion to GDP. Premier R. J. Simpson suggests future opportunities in critical minerals may sustain the economy.