Spotlight Feature Articles OPERATION FOCUS - RIDDER | Page 2

OPERATION FOCUS Ridder’s riches A development drill at the new Dolinny operation Zhairem is either smelted at Ust-Kamenogorsk or sold to the Chinese market. The RMCC organisation covers the three mines and concentrator, with some 3,000 employees and including also an automated systems control department, power facilities, materials procurement and analytical/technical control. Modern mining at RMCC Paul Moore had the opportunity to visit the Kazzinc- owned Ridder Mining and Concentrating Complex in East Kazakhstan in 2019, including the new Dolinny operation. The polymetallic complex is already one of the world’s most productive and modern mines but is taking a step further with greater automation and application of more continuous haulage processes he company was established in 1997 through the merger of East Kazakhstan's three main non-ferrous metal companies: Ust-Kamenogorsk Lead and Zinc Complex, Leninogorsk Polymetallic Complex (now known as RMCC) and the Zyryanovsk Lead Complex. All three producers were majority-owned by the Government of Kazakhstan. The controlling block of shares in Kazzinc was then sold to the private sector and Glencore International AG became the company's main investor. In the years since its creation, Kazzinc has significantly increased production capacity and output. The company continues to develop, seeking to gain a stable position among the world's top five zinc producers with the lowest production cost. The company established an integrated management system in accordance with ISO 9001, ISO 14001, and ISO 50001 international standards capturing the entire non-ferrous metals production cycle: from ore mining to ore treatment with production of refined metals; ancillary facilities supporting the production and providing infrastructure, transportation, resources, as well as waste disposal capabilities. In 2004 Kazzinc was first certified under DIN EN ISO 9001 (Quality Management System). Currently the management system is successfully operated and undergoes periodic verification audits of quality and environmental management system for compliance with DIN T International Mining | FEBRUARY 2020 EN ISO 9001 and DIN EN ISO 14001. The huge RMCC operation is some 120 km from Ust-Kamenogorsk and some 1,000 km from Nur-Sultan. The complex has had an impressive safety record in recent years, boosted by a new safety performance programme that began in 2013 to reduce the number of industrial incidents. For the whole of RMCC between 2013- 2018, TRIFR has fallen from 4.60 to 1.38; LTIFR from 2.73 to 1.27 and DISR from 205.6 to 70. It covers everything from mining operations themselves to maintenance processes eg upgrading equipment and processes to behavioural and cultural issues and applies both to RMCC employees as well as contractors. The mines in general operate 24/7 with two 10 hour shifts and maintenance/development blasting between shifts and the number of production blasts per month depending on the mine. RMCC consists of three main mines – Ridder Sokolny, Dolinny and Tishinsky, which deliver ore to the main RMCC concentrator. The operation also processes part of the company’s Zhairem MCC mine pre-concentrate. Zinc concentrate goes from the RMCC concentrator to the RMC smelter plant for production of zinc ingots at site, while gold, copper and lead concentrates are shipped to the smelter in Ust- Kamenogorsk for metal production at the lead and copper smelters and precious metals refinery located there. Lead concentrate from The original Ridder mining operation is one of the most historic mines in the world still operating – the mining company was founded in 1786, two years after British engineer and businessman Philip Ridder discovered the polymetallic deposits in the foothills of Rudny Altay. Mining started in 1791. The city of Ridder was renamed Leninogorsk in 1941, but it reverted back to its original name in 2002. In 1914 – the deposit development rights passed to the English firm of Leslie Urquhart but in 1918 the Urquhart concession was terminated and the mines were flooded. Then in 1925 reconstruction and systematic exploration of the Ridder deposits commenced. In 1994 the Ridder mine and Leninogorsk mine were merged into a single Ridder-Sokolny mine and in 2001-2002 more consolidation came when the Ridder- Sokolny mine and 40th Anniversary of VLKSM mine were merged. Looking at the mines individually, Ridder- Sokolny has mined 198 Mt between 1789 and 2019 including 3.15 Mt Zn, 1.6 Mt Pb and 1.6 Mt Cu along with 580 t of gold and 5,500 t of silver. It has some 1,000 workers. The Tishinskoye deposit was discovered in 1958 and in 1965 the Tishinsky open pit was put into operation. The year 1968 saw the start of Tishinsky underground mining and in 1978 the termination of open pit operations. It has about 800 employees and since the start of operations 60 Mt have been mined (11 Mt of which from the open pit) including 3.985 Mt Zn, 745,000 t Pb, 315,000 Cu, 53 t Au and 957 t Ag. As is clear from these figures, zinc production is the main driver at Tishinsky and this mine was the main reason a zinc smelter was built in Ridder in the first place. Production is now winding down but in-mine exploration drilling continues to extend the minelife further. The mine NSR for 2018 stood at 72% Zn, 15% Cu, Pb 7%, 5% Au and 1% Ag. The new and advanced development Dolinny mine (with some 100 workers currently) is the operation IM visited. The deposit was discovered in 1987 and between 1991-2013 exploration drilling of 83,000 m was carried out and 11,120 core samples were analysed. In 2013 the Dolinny deposit was accessed for underground mining with the in-house Kazzinc-