The paper deals with a brief geological and historical introduction of Ostrava-Karvina coalfield
(OKC), which is followed by details about the rocks tested; macroscopic and microscopic petro-graphic
characterization, their physical and geophysical properties obtained from laboratory seismic measurement.
The rock specimens used to test their geophysical properties were representative of all kinds of rock
samples from borehole Darkov 265-01. To find out possible relations with geophysical and physical
properties, and to discover the fatigue properties of the rock, all these rock specimens (37 in total) were
tested under the same-identical dynamic cyclic loading conditions of 1 Hz frequency and 0.1 mm amplitude
using ramp waveform. The findings and various relations obtained from laboratory investigations are
reporte
