Dengan selesainya pusat pembangkit listrik tenaga air di Siguragura di Sungai Asahan dan mulainya berproduksi pabrik peleburan aluminium di Kuala Tanjung sumatera Utara, sejak tahun 1982 Indonesia menjadi salah satu penghasil logam aluminium . Dengan demikian, Indonesiapun kini mampu mengembangkan industri hulu untuk aluminium secara nyata. Laporan …
Industrial minerals, including construction raw materials, provide the bulk of the solid minerals required by most developed countries, both in tonnage and value. in other countries, the discovery and extraction of industrial minerals is an essential stage in economic development. This book contains a comprehensive coverage of the subjects that occu…