Makundi, Ismael N, Mungubariki M Nyaki, and Najat K Mohammed. “Assessment of Radioactivity Levels in Coal and Coal Ash in Kiwira Coal Mine Using Gamma-Ray Spectrometry”. Tanzania Journal of Science 44, no. 3 (April 18, 2021): 1–11. Accessed April 29, 2024. https://tjs.udsm.ac.tz/index.php/tjs/article/view/283.