“…Solid-state nuclear track detectors (SSNTD) have been extensively used in this regard (Hofmann, 1998;Matiullah et al, 2004;Ahmed et al, 1997aAhmed et al, , b, 1998aKhatibeh et al, 1997;Tufail et al, 1988Tufail et al, , 1992Khan et al, 1991;Rehman et al, 2006a, b). The main objective of this work was to measure the indoor radon levels in some selected areas of North West Frontier Province (NWFP) and federally administered tribal areas (FATA), Pakistan, and to set a baseline data for these areas which would be of great help for radiological database of Pakistan.…”