DADA OBELE, J. .; ASURU, C. . OPTIMIZING GOLD MINING OPERATIONS IN NORTHERN NIGERIA: A STUDY OF GEOLOGICAL, TECHNOLOGICAL, AND REGULATORY FACTORS AFFECTING MINING EFFICIENCY, PRODUCTIVITY, AND STRATEGIES FOR ELIMINATING ILLEGAL MINING ACTIVITIES. BW Academic Journal, [S. l.], 2023. Disponível em: https://www.bwjournal.org/index.php/bsjournal/article/view/4497. Acesso em: 30 oct. 2026.