Active exhaust ventilation shaft of Zakłady Górnicze Rudna within the Rudna Główna copper mining complex at Polkowice, Lower Silesia.
Shaft R-V is an exhaust ventilation shaft of Zakłady Górnicze Rudna, situated within the Rudna Główna district of this large copper ore mine operated by KGHM Polska Miedź S.A. north of Polkowice, Lower Silesia. ZG Rudna, established in 1969 and opened in 1974, is one of the largest and deepest copper mines in the world, with ore extracted from polymetallic deposits at depths of 900 to 1,244 metres. R-V is classified as a wydechowy — exhaust — shaft, drawing used mine air from the underground workings to surface.
Its location in the Rudna Główna district places it alongside shafts R-I and R-II, the primary haulage shafts of that district. R-V assumed exhaust ventilation duties as the mine's working faces expanded, taking over functions previously performed by the peripheral shaft R-VI as the mining front moved north-eastward.
Shaft R-V is an exhaust ventilation shaft located in the Rudna Główna district of Zakłady Górnicze Rudna, which together with the Rudna Zachodnia and Rudna Północna districts constitutes the underground working area of this major copper mine. The shaft's co-ordinates place it approximately 1.5 kilometres south-east of the closely grouped Rudna Zachodnia shaft complex, consistent with its position within the older Rudna Główna zone.
Zakłady Górnicze Rudna was established as a mine under construction in September 1969, and shaft sinking in the Rudna Główna area began in 1971 to 1972. The mine was handed over for official production on 17 July 1974, and the first ore skip was raised at shaft R-I on 20 July 1974. The primary shafts of the Rudna Główna district — R-I, R-II and R-V — were built as part of this founding construction programme.
According to a geocaching source drawing on mine documentation, ZG Rudna has eleven shafts, of which seven serve an intake ventilation function and four an exhaust function. R-V is listed among the exhaust (wydechowy) shafts alongside R-VIII, R-X and R-XI, and is assigned to the Rudna Główna district alongside R-I and R-II.
The role of R-V as an exhaust shaft is further clarified by a 2016 article in Gazeta Lubuska concerning the decommissioning of shaft R-VI. That article records that the exhaust ventilation functions previously held by the peripheral shaft R-VI were progressively transferred to a succession of newer shafts — R-X, R-V, R-VIII and R-XI — as the mine's extraction front moved north-eastward and R-VI became too remote and uneconomical to maintain. This sequence confirms that R-V was already fulfilling an exhaust ventilation role by the time R-VI's function was formally changed in 1996.
The mine as a whole produces approximately 12 million tonnes of copper ore per year at an average copper grade of around 1.8 per cent, making ZG Rudna the single largest contributor to Polish copper output. Shaft R-V continues to form part of the operational ventilation system supporting these workings.