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An investigation of the area around the former Ilisova uranium mines and pilot in-situ leaching plant, located 50 m from the Danube in a SW Romanian national park, included field measurement of gamma radiation, rock sampling and analysis for U, Ra, Cu, Pb, Zn, Ni and Co, water sampling, determination of radon levels and the collecting of water, soil, sediment and vegetation samples from around the pilot plant. Cumulative doses were calculated on the basis of 5 months' exposure each year for 6 hours/day, as the houses in the area are for summer use only. The results showed that the plant activities had contaminated about 7 000 m2 of the surface as well as part of the groundwater of the former ore deposit. The highest risk to the population is from the concrete tank, which still contains amounts of ore, and the surface of the former ore deposit, which could at any time be used for picnicing by visitors to the national park., An investigation of the area around the former Ilisova uranium mines and pilot in-situ leaching plant, located 50 m from the Danube in a SW Romanian national park, included field measurement of gamma radiation, rock sampling and analysis for U, Ra, Cu, Pb, Zn, Ni and Co, water sampling, determination of radon levels and the collecting of water, soil, sediment and vegetation samples from around the pilot plant. Cumulative doses were calculated on the basis of 5 months' exposure each year for 6 hours/day, as the houses in the area are for summer use only. The results showed that the plant activities had contaminated about 7 000 m2 of the surface as well as part of the groundwater of the former ore deposit. The highest risk to the population is from the concrete tank, which still contains amounts of ore, and the surface of the former ore deposit, which could at any time be used for picnicing by visitors to the national park.

Exploitation of uranium ore at Barzava, in westerrn Romania, began in 1963 via two shafts and two galleries. Waste rock from the central shaft is located in Barzava city, extremely close to the river and occupying a surface area of 3 600 m3, where forty years of erosion-related U and Ra migration from spoil has contaminated soil at the base of the dump. Results are presented from the sampling of vegetation, particularly in the direction of flow, and from calculations of potential internal and external radiation dosages to adults through internal ingestion in water or food, ingestion into the airways, or external irradiation., Exploitation of uranium ore at Barzava, in westerrn Romania, began in 1963 via two shafts and two galleries. Waste rock from the central shaft is located in Barzava city, extremely close to the river and occupying a surface area of 3 600 m3, where forty years of erosion-related U and Ra migration from spoil has contaminated soil at the base of the dump. Results are presented from the sampling of vegetation, particularly in the direction of flow, and from calculations of potential internal and external radiation dosages to adults through internal ingestion in water or food, ingestion into the airways, or external irradiation.