Contract of work quarterly report for period 1 july to 30 september 1988: 918/0733/PAT/89, 24-2-89
Contract of Work Quarterly Report for Period 1 April to 30 June 1988: PT Antamdomin Sintang
Contract of Work Quarterly Report for Period 25 October 1987 to 30 March 1988: PT Antamdomin Sintang