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  • Title: Natural radionuclides in zircon and related radiological impacts in mineral separation plants.
    Author: Haridasan PP, Pillai PM, Khan AH, Puranik VD.
    Journal: Radiat Prot Dosimetry; 2006; 121(4):364-9. PubMed ID: 16682394.
    Abstract:
    The activity concentration of uranium and thorium present in zircon obtained from mineral sand industries are presented. External gamma radiation levels and inhalation of airborne dust are found to be the significant routes of radiation exposure to occupational workers. The annual average dose attributed to zircon processing is estimated to be 2.3 mSv in the plants under study. This paper presents the results of external gamma measurements, estimation of airborne radioactivity in zircon process locations and radon and thoron in the occupational environment of two mineral separation plants in India. Analyses of the solid wastes and liquid effluent generated and resultant environmental impacts are indicated.
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