11:00 AM - 1:00 PM
*Fadlin Fadlin1,2, Ryohei Takahashi1, Andrea Agangi1, Pearlyn Manalo1, Hinako Sato1, Arifudin Idrus3, Bronto Sutopo4, Rachmat Pratiwinda5 (1.Akita University, 2.Study Program of Geological Engineering, Jenderal Soedirman University (Indonesia), 3.Department of Geological Engineering, Universitas Gadjah Mada (Indonesia), 4.PT. Antam, Tbk (Indonesia), 5.PT. Sumbawa Timur Mining (Indonesia))