Thema Arrisaldi,
Department of Geological Engineering, Faculty of Technology Mineral and Energy, Universitas Pembangunan Nasional Veteran Yogyakarta,
Indonesia
Muhammad Amin Arya Bima,
Graduate Institute of Applied Geology, National Central University,
China
Raja Susatio,
Department of Environmental Science, Universitas Sebelas Maret,
Indonesia
Nur Anisa Mardhotillah,
Department of Railway Engineering, Faculty of Infrastructure and Regional Technology, Institut Teknologi Sumatera,
Indonesia