The layer of rock and soil above the cave is about 30 meters. The site has excellent observation conditions as of noise. PAS, Dept. of Seism. Triggered miniseed volumes after conversion from original MSS format. Back data saved to CD-ROMs.
Calibrations only approximate.
Station runs parallel short period registration on GS13 seismometers, recording many mining-induced events from Upper Silesia and stronger events from Lubin Copper Basin. We welcome seismologists to visit the observatory.