Contact addresses of the organizing committee:
Matej Neznal, RADON v.o.s. corp., 18000 Prague 8, Novakovych 6, Czech Republic,
fax +420 266317550, phone +420 266314112, e-mail radon@comp.cz
Ivan Barnet, Czech Geological Survey, Klarov 3, 11821 Prague 1, Czech Republic,
fax +420 251818748, phone +420 251085205, e-mail ivan.barnet@geology.cz