Proposed work programme and budget for the year ending 31st March, 1989: PT. Antam Barisan Mining
PT antam Barisan mining quarterly progress report for the period ending march 31, 1988 (EMR 66/88)
Drilling proposal, momong prospect block 4, PT Antam Barisan Mining contract of work area EMR 84/87
Minerals Exploration and Development Group
Blok prospek pada eks wilayah kontrak karya Antam Barisan Mining, Sumbar-Sumut (KP. DU-219, 220, 223, 224, 235, 236, 237, 238, 239/SUMBAR dan KP. DU-235/SUMUT)
Second reliquisment of the contract of work area North and West Sumatera: PT Antam Barisan Mining (9756)