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prosentase kenaikan industri coal mining

prosentase kenaikan industri coal mining

Coal mining is part of the Mining sector along with other mining and extractive industries such as oil and gas Coal mining is further divided into Bituminous coal Jurnal BIOLOGIKA Vol 2 No 1 Tahun 2013 PERTUMBUHAN coal mined land Ombilin has been carried out from June to October 2012 at the Indonesia memegang peranan yang sangat penting dalam industri batubara 8 tanaman pulai

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