
The “KADRA” Trade Union of Jastrzębska Spółka Węglowa S.A. “Borynia” Coal Mine in Jastrzębie Zdrój is a constantly and dynamically developing organization which started in 1989. The number of “KADRA” members is almost 600 people who use the Okayo WT-300 tour guide system during their union trips since March 2015.