MINING ENGINEERING (M, Metallurgical and.
 Metallurgical and Mining Engineering (MEM).
<strong>Philippine Engineering Journal</strong>, [S.l.], v. 13, n. 2, sep. 2021.
ISSN 2718-9287.
Available at: &lt;<a href="https://www.journals.upd.edu.ph/index.php/pej/article/view/8172" target="_new">https://www.journals.upd.edu.ph/index.php/pej/article/view/8172</a>&gt;. Date accessed: 06 sep. 2025.