HAO, Yu. Fire Extinguishing Technology Ssing Borehole Drilling In Closed Fire Zones of Coal Mines. International Journal of Materials Science and Technology Studies, U.K., v. 2, n. 1, p. 33–37, 2024. DOI: 10.62051/ijmsts.v2n1.06. Disponível em: https://wepub.org/index.php/IJMSTS/article/view/3178. Acesso em: 21 apr. 2026.