Demanson Ornansah Sinaga, Novandri Kusuma Wardana, dan Erry Sumarjono. “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, Vol. 18, no. 1, November 2023, hlm. 223-8, //journal.itny.ac.id/index.php/ReTII/article/view/4204.