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Prospect 9759 Simpang Datar sampling report Muara Sipongi, Natal Contract of work:
CSR Limited Minerals exploration and development group
Sagala, B. D
Additional Author
mixed material
Bukittinggi
CSR Limited
1985
2018100690.jpg.jpg
Prospect 9759 Report on follow up in the upper Pasaman drainage area and field investigation of photo anomaly N16:
CSR Limited Minerals exploration and development group
Kavalieris, I.
Additional Author
Sagala, B. D
Additional Author
mixed material
Bukittinggi
CSR Limited
1985
2018100688.jpg.jpg
Quarterly progress report for the period ending September 30, 1988:
Prospect 9756
Sagala, B. D
Additional Author
Soemantri, H.
Additional Author
mixed material
Bukittinggi
PT Antam Barisan Mining
1988
2018100987.jpg.jpg
Quarterly progress report for the period ending 31 st March 1990
Saad, Hanafi
Additional Author
Sagala, B. D
Additional Author
mixed material
Bukittinggi
PT Antam Barisan Mining
1990
Quarterly progress report for the period ending June 30, 1988:
Prospect 9756
Sagala, B. D
Additional Author
mixed material
Bukittinggi
PT Antam Barisan Mining
1988
Fourth quarterly report and 1987 annual review PT Antam Barisan Mining
Sagala, B. D
Additional Author
mixed material
Bukittinggi
PT Antam Barisan Mining
1988
Reconnaissance sampling of the middle and upper reaches of the B. Batahan drainage Natal., J.V. Sumatera Indonesia:
CSR Limited Minerals exploration and development group
Sagala, B. D
Additional Author
mixed material
Bukittinggi
CSR Limited
1986