Quarterly Report on Exploration KP 289, Kotamobagu, Sulawesi Utara: 3rd Quarter 1987
Quarterly Report on Exploration KP 289, Kotamobagu, Sulawesi Utara: 1st Quarter 1987
Report on end of general survey and pre contract of work period Part II Volume 1: Report on the exploration conducted in the PT Antam Lanut Mining Contract of work
Report on end of general survey and pre contract of work period Part 1 Volume 1: Report on the exploration conducted in KP209 North Sulawesi
Report on end of general survey and pre contract of work period Part II Volume 3: Report on the exploration conducted in the PT Antam Tobongan Mining Contract of work"
Report on end of general survey and pre contract of work period Part II Volume 2: Report on the exploration conducted in the PT Antam Minthu Mining Contract of work"