By decree of the Director of Government enterprises dated 2 October 1914, 12011, to undersigned was instructed to undertake a business trip in order to carry out a closer investigation of the sulfur occurrence in the by Government decree reserved part of the Residency of Besuki, also t collect data for preparation of an eventual exploitation of the sulfur.
A number of important phones of the investigation of te Idjen Crater Lake as a source of Eynsu and other chemicals have beon, or will shortly be completed. In view of this and since the writer shall be leaving Indonesia on April 8th for a reriod of four monthn, this opportunity is taken to bring the Bank Indistri Negara up to date on the present status of the vork on the Idjen Crater Lake project.
The 1989 International Association of Volcanology and Chemistry of the of the Earth's Interior (IAVCEI) General Assembly was held in Santa Fe, New Mexico, 17 June -4 July 1989. Three of IAVCEI programs which I chose comprised the field excursion to Mt. St. Helens, Washington (25 June 1989); the IAVCEI conference at Sante Fe, New Mexico (25 June - 1 July 1989); and a short course of volcanic ha…