When it is discovered that the Zygmunt mine in Upper Silesia has been deemed unprofitable and is to be closed by flooding, the miners go on strike and a violent demonstration ensues.

Directed by: Kazimierz Kutz
Written by: Kazimierz Kutz
Release date: 1972-01-27
Runtime: 111 minutes
Cast:
Lucja Kowolik Lucja Kowolik
Wikta 
Jan Englert Jan Englert
Erwin Maliniok 
Franciszek Pieczka Franciszek Pieczka
Hubert Siersza 
Jerzy Cnota Jerzy Cnota
August Mol 
Bernard Krawczyk Bernard Krawczyk
Franciszek Bula 
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Also known as:
  • Pearl in the Crown