Demanson Ornansah Sinaga, Novandri Kusuma Wardana, and Erry Sumarjono. 2023. “Analysis of the Use of 80% Waste Oil in Products HiMEX70 on the Quality of Blasting Results at PT Petrosea Jobsite Kideco Jaya Agung East Kalimantan”. ReTII 18 (1), 223-28. //journal.itny.ac.id/index.php/ReTII/article/view/4204.