Analisis Fuel Ratio Pada Project Penambangan di Pit 1 PT Cahaya Riau Mandiri Jobsite PT Duta Alam Sumatera: The Analysis Of Fuel Ratio On Mining Project In Pit 1 Of PT Cahaya Riau Mandiri Jobsite PT Duta Alam Sumatera. mineral. 2023;8(1):39-46. doi:10.33019/mineral.v8i1.4097