ANALYSIS OF REQUIRED CONSTRUCTION TIME FOR DRIFT IN ROCK TYPE – LEAD AND ZINK ORE. Natural Resources and Technology, [S. l.], v. 13, n. 13, p. 5–9, 2019. Disponível em: https://js.ugd.edu.mk/index.php/NRT/article/view/3065. Acesso em: 3 may. 2026.