Prof. Dr. Hadiyanto, S.T., M.Sc, Universitas Diponegoro, Indonesia

Radjali Amin, Ph.D, Institut Teknologi Yogyakarta, Indonesia

Dr. Datu Buyung Agusdinata, School of Sustainability, Arizona State University, United States

Prof. Ir. Didi Supriadi Agustawijaya, M.Eng., Ph.D, Civil Engineering Department, Universitas Mataram, Indonesia

Dr. Barlian Dwinegara, Mine Engineering Department, Faculty of Mineral Technology, UPN Veteran, Yogyakarta, Indonesia

Dr. Arifudin Idrus, Universitas Gajah Mada (UGM), Yogyakarta, Indonesia

Dr. Suhayat Minardi, S.SI., M.T, Physics Department, Faculty of Mathematics and Sciences, Universitas Mataram, Indonesia

Dr. Tedy Agung Cahyadi, Mine Engineering Department, Faculty of Mineral Technology, UPN Veteran, Yogyakarta, Indonesia