Research was conducted into eight scientific and development projects, co-financed by the Ministry of Science and Technology, the Ministry of Environment and Physical Planning and the Ministry of Culture, and three applicative projects by all the researchers from the Institute: the Karst in Slovenia 1 (tectonic and lithologic fundamentals of karstification; lithological and biostratigraphic research from the standpoint of formation of karstic caves; measurements of the direction of tectoglyphs in the background of the source of the Krupa using the Eraso method; preparation for the study of the palaeokarst in Slovenia; determination of the speed and direction of percolation water in a non-saturated zone; analysis of physical and chemical properties of karstic springs; monitoring the extraction of tufa; monitoring the quality of water flowing away from the motorway; examining the hydrogeological conditions and defining the dynamic regime of subterranean water in fissured aquifers; study of large cave systems; study of the history of research into the Slovene Karst.

The first phase of speleological research into the Škocjan caves consisted of: speleomorphology; microclimate; water; sediments. The project was concluded on the 30th of June 1994 and a relevant final report was made.

Other projects included speleological research for the protection and preservation of the Škocjan caves, the emergence and formation of Karstic caverns with the focus on their protection and exploitation (speleogenetic studies), protection and management of the Krka at sections with an intensive tufa growth (the observation method and tufa analysis were determined), spreading of harmful substances in the Karst tracers and models in different aquifers (coordination and organisation activity, monthly sampling, chemical analyses, combined tracing experiment was performed), emergence and formation of Karstic caverns (postdoctorial project by Dr. Tadej Slabe), watersheds in the Slovene Karst (collection of data on watersheds), geodetic study of new parts of the Križna cave 2 (stabilisation and measurement of the polygon), evaluation of the impacts of the planned motorways in Slovenia on the water environment (Karstic phenomena, 1st phase), research into Karstic phenomena on the Divača-Kastelec motorway route and a transitional evaluation of the impact of the Karst north-west wind on the anticipated route, karstological supervision of the Divača-Dane and Čebulovica-Divača motorway.

Various expert opinions were given with the appertaining laboratory analyses (oil leak after the accident at Obrov). On the whole, 470 definitions of fluorescence, 820 physical measurements and 1,800 chemical analyses were carried out in the chemistry laboratory. A total of 6,476 karstic caves are listed in the cave register (the basic data is computer processed), 49 drawings and designs were made in the drawing section, and the cartographic collection was enriched with 171 new units. There are 82 new books available in addition to the periodicals received on a regular basis, and 1,7332 articles and monographs were computer processed.

The Institute participates in international projects: IGCP-UNESCO Project No. 299, COST Action No. 65, ATH 7.SWT, cooperation with U.R.A. 903 C.N.R.S., KEDAP project, ALIS Link No. 12 (British Council and the Ministry of Science and Technology).

The Institute organised the 2nd karstological school "Classical Karst" in Postojna and two international meetings "Preparatory Meeting for 7.SWT Investigations" in Idrija and Umkirch (Baden Württemberg, Germany).

Students from Slovenia and Germany took part in the practical work and an outside associate, Dr. Trevor R. Shaw (United Kingdom), was also involved in research activities.