en.Wedoany.com Reported - Tonoda JSC (АО «Тонода»), a subsidiary of Russia's Polyus Gold (Полюс), disclosed on June 18, 2026, plans to construct a processing facility with an annual capacity of 6 million tons of ore at the Chertovo Koryto (Чертово корыто) gold deposit in the Irkutsk Region.
Previously, Polyus Gold had planned to build a processing plant with an annual capacity of 5 million tons at this deposit, originally scheduled to commence operations in 2029. The new plan increases the annual processing capacity to 6 million tons of ore, with the total annual stripping and mining volume at the open pit expected to reach 7 million cubic meters. Preliminary estimates indicate a mining lifespan of approximately eight years for the deposit. The enterprise will operate year-round, with the final product being Dore alloy (сплав Доре). The project's feasibility study, titled "Gold Mining Enterprise-Mining Complex at the Chertovo Koryto Deposit Gold Mining," was completed in 2025 by Polyus Project LLC (ООО «Полюс Проект»).
The Chertovo Koryto deposit is located in the northwestern part of the Bodaibo District, Irkutsk Region, 85 kilometers due north of the village of Marakan (пос. Маракан) and 170 kilometers from Polyus Gold's Verninsky (Вернинский) processing plant. As of January 1, 2018, the deposit's balance sheet reserves (C1+C2) amounted to 86.894 tons of gold, with off-balance sheet reserves of 15.133 tons; additionally, the ore stockpile contained C2 category reserves of 304 kilograms of gold. According to data from Polyus Gold's official website, proven and probable reserves calculated under the JORC standard stand at 3.1 million ounces.
The Polyus Group (Группа «Полюс») ranks among the world's top five publicly traded gold mining companies by production volume and holds one of the largest gold reserves globally. The company's main production facilities are located in the Krasnoyarsk Territory, Irkutsk Region, and Magadan Region in Siberia and the Far East, as well as the Sakha Republic (Yakutia). Enterprises under Polyus PJSC (ПАО «Полюс») produced 2.528 million ounces (78.64 tons) of gold in 2025, a 16% decrease year-on-year. The production forecast for 2026 is 2.5-2.6 million ounces of gold.
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