MUHAMMAD SOHAIL. COMPARISON OF SURFACE AND UNDERGROUND MINING METHODS IN TERMS OF COST AND SAFETY. Spectrum of Engineering Sciences, [S. l.], v. 3, n. 9, p. 1648–1658, 2025. Disponível em: https://thesesjournal.com/index.php/1/article/view/1597. Acesso em: 29 may. 2026.