Japan is the largest coal importer in the world, importing from Australia, China, Indonesia, Canada, Vietnam, etc. In Indonesia, most of the produced coal is extracted from open cut mines. More open cut coal mines will be developed to fill the demand for coal in Indonesia and the world. Many surveys and projects for developing new coal mines and transferring mining technology are being conducted in tropical counties such as Indonesia and Vietnam with the aid of the Japanese Government. It has, however, been pointed out that excessive and precarious development of mines in tropical areas will damage the environments around the mines including cultivated lands, and reduce the precious rainforest._x000D_
This would undoubtedly exacerbate the instability of the global climate and the food crisis in the world. This paper describes the effects of flyash on the control of acid mine drainage in order to avoid potential negative impacts on the environment caused from open cut coal mines._x000D_
FORMAL CITATION:Shimada, H, Sasaoka, T, Matsui, K, Kusuma, G J, Oya, J, Takamoto, H, Kramadibrata, S and Sulistianto, B, 2010. Fundamental study of acid drainage control using flyash, in Proceedings Mine Planning and Equipment Selection (MPES) 2010, pp 247-256 (The Australasian Institute of Mining and Metallurgy: Melbourne).