Pengaruh Riffles dan Kemiringan Underflow Sluice Box Terhadap Optimalisasi Pemisahan Bijih Timah Skala Laboratorium: Effects of Riffles and Underflow Sluice Box Slope on Optimization of Tin Ore Separation Laboratory Scale. mineral. 2019;4(2):50-57. doi:10.33019/mineral.v4i2.1595