Sunaryo, M. E. (2018) “CONCERNS ON USING COAL SPOIL DUMPS (COLLIERY SPOILS) AS SUB-STANDARD MATERIALS FOR CONSTRUCTION MATERIALS”, Jurnal Jalan Jembatan, 24(1), p. 23. Available at: https://binamarga.pu.go.id/jurnal/index.php/jurnaljalanjembatan/article/view/340 (Accessed: 21 September 2025).