Materiały konferencyjne SEP 1992

ORGANIZING COMMITTEE Grażyna HOLOJUCH (inanaging editor) Jerzy KICKI Cchairman) Maciej MAZURKIEWICZ Zenon PILECKI (secretary] Zbigniew PIOTROWSKI Jacek SOBCZYK Krzysztof STACHURSKI Jan WACŁAWSKI COMMITTEE ADDRESS Underground £xploitation School ul. J.Wybickiego 7 31-261 Kraków tel/fax (0-12) 36 12 24 Presented text is in originally form Ali inąuiries regairding the proceedings should be addressed to organizing coinmittee office Printed in Minerals and Energy Economy Research Centre Polish Academy of Sciences ul. J.Wybickiego 7 31-261 Kraków