DANG VU, Khac; TA DUC, Hieu; NGO THI HAI, Yen; NGUYEN KHAC, Anh; PHAM THANH, Hai; WEBER, Christiane. Observation of coal mining activities in Ha Long and Cam Pha cities, Quang Ninh province, Vietnam using Sentinel-2 data . <b>Vietnam Journal of Earth Sciences</b>, <i>[S. l.]</i>, v. 47, n. 2, p. 272–289, 2025. DOI: 10.15625/2615-9783/23010. Disponível em: http://vjes.vast.vn/jse/article/view/23010. Acesso em: 8 nov. 2025.