McClean Lake Site Guide
Orano Canada Inc. 1 2
McClean Lake Ownership Orano’s McClean Lake operation is located in northeast Saskatchewan on Treaty 10 Territory and the Homeland of the Métis, and over 750 kilometres northeast of Saskatoon. The site is comprised of several uranium mines and one of the most technologically advanced uranium mills in the world—the only mill designed to process high- grade uranium ore without dilution. Orano has operated several open-pit uranium mines at the McClean Lake site, and is evaluating future mines at and near the site. A subsidiary of the multinational Orano group, Orano Canada has been exploring for uranium, mining and producing uranium concentrate in Canada for more than 55 years. The company operates the 70% McClean Lake uranium mill and is a major partner in the Cigar Lake, McArthur River and Key Lake operations. Orano Canada is focused on providing a reliable and responsible supply of natural uranium to nuclear electricity producers around the world to generate low-carbon electricity. We are commited to being a responsible uranium miner in terms of health, occupational safety, community involvement and dialogue, environmental protection and business ethics.
22.5% Denison Mines Inc.
7.5% OURD Lorem ipsumCanada Co. Ltd. 3 4 The McClean Lake Mill 14 Mill Layout 9 13 The McClean Lake mill is the only facility in the world capable of processing high-grade uranium ore without dilution. It can process uranium ore grades 11 over 100 times the world’s average grade. 8 6 The mill has an annual production capacity of 24 million pounds of uranium 7 concentrate, and it can receive and process uranium ore from conventional 5 mining and high-grade ore slurry obtained through advanced remote mining techniques. The mill currently processes the high-grade ore slurry it receives from the Cigar Lake mine, the world’s second-largest and 3 highest-grade uranium mine. 4 12 The McClean Lake site operates on a two-weeks-in/two-weeks-out rotation 1 2 schedule for workers, over 50% of whom reside in northern Saskatchewan communities. 10 15
Mill Schematic 1 Ore Receiving & Grinding 6 Solvent Extraction 11 Ferric Sulphate Plant cid ant Mine Sulphuric acid is used 13 in the leaching, count- er-current decantation, Ci ar La e et ore Mine Ore Slurry Receiving Yellowcake Precipitation Tailings Neutralization solvent extraction and Ore toc i e 2 7 12 yellowcake precipita- tion processes. – Acid Ore Recei in rindin i rade Ore rr Leaching Calcining & Packaging Acid Plant – Ferric sulphate 1 3 8 13 erric ate ant – Hydrogen peroxide Ferric sulphate is used 11 Leac in Ore rr Recei in Counter-Current Ammonium Sulphate in the water treatment, 3 2 Water Treatment tailings neutralization, 4 Decantation 9 14 Crystallization Plant and leaching processes. – Acid – Flocculent Co nter C rrent Decantation 4 – Acid Tailings Management O en ant – Ammonia Clarification Oxygen Plant 10 – Sodium carbonate 5 10 15 Facility Oxygen is used on-site – Organics to make ferric sulphate. Clarification 5 – Acid – Ammonia – Caustic o ent traction 6
– Hydrogen peroxide mmoni m ate ai in s e tra i ation – Lime 12 Cr sta i ation ant 14 e owca e reci itation 7 – Ferric sulphate – Barium chloride ai in s Mana ement aci it 15 Ca cinin ac a in 8 – Flocculent