Institutes of Trondheim. For more information write: Hydropower '87, Norwegian Society of Chartered Engineers, Kronprinsens Gt. 17, N-0251 Oslo 2, Norway.

June 29-July 1, 1987 28th U.S. Symposium on Tucson, Arizona U.S.A. Rock Mechanics

This symposium, hosted by the University of Arizona, is sponsored jointly by the U.S. National Committee for Rock Mechanics and the Sociedad Mexicana de Mecanica de Rocas. Topic areas for papers include: fluid flow in rock masses; structure and behavior of rock masses; wave motion and transmission in rocks; application of numerical and constitutive models to design in rocks; improvement of mechanical methods of excavation in strong and weak rocks; use of underground space, particularly for nuclear waste isolation; and ease histories of investigation and construction. For more information write: Dr. Inn Farmer, 28th U.S. Symposium on Rock Mechanics, Special Professional Education, Box 9, Harvill Building, University of Arizona, Tucson, AZ 85721 U.S.A.

August 16-21, 1987 Cartagena, Colombia

8th Panamerican Conference on Soil Mechanics and

Foundation Engineering

Organized by the Colombian group of the ISRM, the theme of the conference is geotechnical engineering in developing countries. Sessions will feature papers on exploration, sampling, tests, and instrumentation; methods of analysis of the soil-structure interaction; experience in foundations and support structures; teaching geotechnology; geotechniques in superficial linear works; soil improvement and stabilization techniques; risk evaluation in geotechnology. For more information write: The Secretary, Sociedad Colombiana de Geotecnia, Apartado Aereo 057045, Bogota, D.E., Colombia.

August 17-20, 1987 Boston, Massachusetts, U.S.A.

International Conference on Planning and

Design Theory

This multidiscipli.'aary congress will cover theory, methodology, research and practice, integrating the themes and sessions of the following five concurrent conferences, each cosponsored by different disciplinary and international groups: Pi.~nning and Design in Architecture; Planning and Design in the Management of Business and Organizations; Planning and Problem Solving in Education; Engineering Design; and Planning and Design in Urban and Regional Planning. For more information write: Pro/'. Gerald Nadler, Congress Chairman: ICPDT, University of Southern California, University Park, Los Angeles, CA 90089 U.S.A.

August 31-September 2, 1987 Harare, Zimbabwe

African Micing

Organized by the Institution of Mining a nd

Metallurgy in association with the 2timbabw¢ Section of the Institution, this conference will deal with all aspects of the minerals industry-- exploration, exploitation, treatment and finance-- that have particular relevance to Africa. A variety of pre-and post-conference tours, both technical and social, will be offered. For more information write: Conference Office, The Institution of Mining and Metallurgy, 44 Portland Place, London WIN 4BR, England. Telephone: 01-580 3802. Telex: 261410 IIVlM G.

August 30- September 3, 1987 Montreal, Canada

6th International Congress on Rock Mechanics

Sponsored by the International Society for Rock Mechanics, this congress will focus on four main themes: f luid flow and waste in rock masses; rock foundations and slopes; rock blasting and excavation; and underground openings in overstressed rock. Eight pre- and post-Congress tours in Canada will be offered. For more information write: ISRM Congress 1987, 1130 Sherbrooke St. W, Suite 400, Montreal, Quebec, Canada H3A 2M8.

August 31- September 2, 1987 Dublin, Ireland

9th European Conference on Soil Mechanics and

Foundation Engineering

The theme of this conference, sponsored by the International Society of Soil Mechanics and Foundation Engineers, is groundwater effects in geotechnical engineering. The conference will feature special lectures and nine discussion sessions, on the following topics: field and laboratory testing; filters; special problem soils; groundwater problems in embankments, dams and natural slopes; groundwater problems in foundations and excavations; environmental problems and seepage; groundwater modeling; groundwater control; and dynamic effects. For more information write: Dr. Trevor Orr, Secretary General, IX ECSMFE, Civil Engineering Dept., Tr ini ty College, Dublin 2, Ireland.

September 7-10, 1987 Mora and Orsa, Sweden

Deep Drilling in Crystalline Bedrock

At this Third International Symposium on Observation of the Continental Crust through Drilling, papers will be presented on the following topics: t, ngoing deep drill ing project developments in several countries; achievements in technical subjects associated with crust observations; scientific background on continental crust; deep gas drill ing in the Siljan Impact Structure; and prospects for the future. The official language of the conference is English. For more information write: Deep Drilling in Crystalline Bedrock, e/o Stockholm Convention Bureau, P.O. Box 6911, S-102 39 Stockholm, Sweden. Telephone: 46-8-23 09 90.

96 TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY Volume 2, Number 1, 1987