Some aspects of the petrography and rock chemistry of Gunung Parang and Gunung Bongkok intrusive rocks and the possible occurrence of sulfide ores bearing mineralization
 Artikel Jurnal
Review of geological and mining condition at Ombilin, Indonesia, in comparison with those at other collieries, in Australia and the United Kingdom
 Artikel Jurnal
Proprer loading of blastholes for better fragmentation and safety
 Artikel Jurnal
Detailed coal exploration in Napal, Peranap, Riau, Sumatera, Indonesia
 Artikel Jurnal
Mineral matter and its identification in Indonesian coal
 Artikel Jurnal
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