Analisis Penggunaan Powder Factor Terhadap Fragmentasi pada Lubang Ledak Vertikal dan Inclined di PT Aditya Buana Inter: (Analysis of Powder Factor Using On Fragmentation In Vertical And Inclined Blast Hole at PT Aditya Buana Inter). mineral. 2019;4(2):65-71. doi:10.33019/mineral.v4i2.1597