Argyle diamond mine at the Ekati mine, both in Canada. However, Argyle has two to four times the concentration of diamonds (ore grade) of these mines. This makes extraction economically feasible, as mine costs are mostly related to the amount of ore processed, not the amount of diamond extracted. In 2005, Rio Tinto was given the go-ahead to a future expansion project, moving it from an open pit to an underground mine. This plan was postponed; in September 2010 Rio Tinto announced fresh plans to develop an underground mine beneath the existing pit, increasing annual production to 9 million tonnes of ore. The
Keith Peterson and Director until 2002. The Kitikmeot Corporation is the wholly owned Inuit Birthright development corporation of the Kitikmeot Inuit Association. They invest land claims payments in business ventures to create economic wealth for Kitikmeot Inuit. From 1991 until 2004 Peterson provided political, social and business advice to the Kitikmeot Inuit Association. He was the KIA's lead negotiator for benefits agreements with Northwest Territories and Nunavut based mines, including Echo Bay Mines (Lupin Mine), Tahera Diamonds (Jericho Diamond Mine), Miramar Gold Mine (until he was elected MLA), BHP Ekati (Ekati Diamond Mine), and Diavik Diamond Mine. He was a member of