Mekel, Peggy Adeline, W.I.M Poli, Muh. Idrus Taba, Sanusi Fattah, and Melky Jakhin Pangemanan. “Process and Lessons Learned From the Mine Closure of PT. Newmont Minahasa Raya”. European Multidisciplinary Journal of Modern Science (June 16, 2022): 219–235. Accessed May 18, 2024. https://emjms.academicjournal.io/index.php/emjms/article/view/585.