ABSTRACT
Radiotechnical Institute (VNIIFTRI) in Moscow (Former USSR) ...................................384 15.3 Reported Uncertainties in the Exposure of Miners (Some BEIR VI Remarks) .................384 15.4 Direct Measurement of Activity in the Lungs: Problems with Practical Application ........ 386 15.5 Geography and Underground Conditions of Mine Regions ............................................... 386 15.6 Diversity of Mining and Working Conditions .................................................................... 387 15.7 Direct Method: The Tadjikistan Study as an Opportunity to Reduce
Lung Dosimetric Uncertainty ............................................................................................. 388 15.8 Radioactive Aerosols and Lung Irradiation ........................................................................390 15.9 Aerosol Concentration Measurement .................................................................................. 393
15.9.1 Radon and Its Contribution to Absorbed Dose ..................................................... 393 15.9.1.1 Experimental Study on Animals ......................................................... 393
15.10 Dosimetry ............................................................................................................................ 394 15.10.1 IIntake versus Exposure: Propagation of the Uncertainties in Dose
Assessment in Mining Studies .............................................................................. 394 15.10.1.1 Discussion on Miner Radiation Dosimetry: Quantitative Approach .... 395
15.10.2 Method of Direct Measurement of the Activity (Dose) in the Lungs of Miners ..... 399 15.10.2.1 Theory of the Method ..........................................................................400 15.10.2.2 Correction for the Shift of Equilibrium of Radon Progeny in the
Air and in the Lungs ............................................................................402 15.10.2.3 Accounting for Parametric Variations: Variations of
Concentrations, Breathing Rate, and Deposition Coef†cients in Real Working Conditions ....................................................................404
