Warnakulasuriya, T.; Williams, S.; Dabarera, M.; Rodrigo, K.; Weerakkody, T.; Wickremasinghe, R.
(Oxford University Press, 2017)
Lanka Mineral Sands Ltd (LMS), a government-owned company, has been mining mineral sands including monazite which contains thorium (Th) at Pulmoddai, Sri Lanka since 1957. Th emits alpha particles on decay and gamma rays ...