“Gamma Radiation Measurements and Dose Rate in Waste Soil Samples of OK-Tedi Gold – Copper Mine in Western Province of Papua New Guinea”. Melanesian Journal of Geomatics and Property Studies 9, no. 1 (January 30, 2023). Accessed August 13, 2026. https://pnguotjournals.unitech.ac.pg/index.php/mjgps/article/view/204.