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The Safety and Security,radiological consequences during the uranium mining operations,tailings management,uranium processing,transport and disposal of waste in conventional landfill sites are matters of great importance.The Uranium National Company (CNU) from Romania is responsible for all aspects belonging to the management within uranium industry - the uranium ore extraction,transport and processing of uranium ore,concentrates processing,as well as disposal of sterile ore and waste.The paper presents specific problems related to the identification and evaluation of potential environmental risks,potential radiological consequences,by using computer codes as 1RADTRAN 6 and 2INTERTRAN 2,associated with the transport of uranium ore -by road and by rail- the disposal of sterile and the uranium processing waste.Some aspects related to the disposal and its management of uranium mill tailings and uranium sterile landfill,evaluation of the environmental aspects,dispersion factors,there will be also presented.The paper is a layout of the result of the IAEA Romanian Scientific Research Contract-"Risk and Safety Evaluation in the Transportation and Disposal of Naturally Occurring Material-uraniurn ore,in Romania",part of the IAEA CRP-Coordinated Research Project-"The Appropriate Level of Regulatory Control for the Safe Transport of Naturally Occurring Radioactive Material (NORM)" where the main author is CSI-Chief Scientific Investigator,for the above mentioned IAEA - Romanian Scientific Research Contract.