𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Networks of companies and branches in Poland

✍ Scribed by Anna M. Chmiel; Julian Sienkiewicz; Krzysztof Suchecki; Janusz A. Hołyst

Publisher
Elsevier Science
Year
2007
Tongue
English
Weight
184 KB
Volume
383
Category
Article
ISSN
0378-4371

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Presently the seismic and rock burst hazard appears still to be important in most of hard coal mines in Poland. Recently, there was a significant increase of seismic activity of the Silesian rock massive, when compared with the previous years. In the period 1999-2008 the hard coal mines experienced