Nisbah pengupasan impas ( break even stripping ratio )

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Nisbah pengupasan impas ( break even stripping ratio ) merupakan Angka perbandingan antara nilai suatu endapan bahan galian per ton dikurangi ongkos produksinya per ton di luar ongkos pengupasan tanah penutup, dibagi ongkos pengupasan tanah penutup per ton

Cari Istilah Geologi Tambang


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