It is Proposed to recover and produce on a commercial basis: a. gypsum, by Precipitation this material from a natural, dilute nut impure sulphuric acid salution throught a reaction with limestone
pada tahun 1979,proyek inventiarisasi dan eksplorasi batubara telah mulai menyelidiki endapan batubara di alimantan timur,di daerah antara samarinda-balikpapan
in the framework of the iron and street project of the biro pranjang negara,geological investigation on the coal deposits in te sungup-salero region in the northen part of pulau laut(southhest Kalimantan),were carried our in the 1958 by the geoogical survey indonesia
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Deskripsi Fisik
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