52 years have passed since the tragedy in the Silesia mine. On June 28, 1974, 34 miners died and 30 were injured as a result of a methane explosion, and in part also coal dust.
52 years have passed since the tragedy in the Silesia mine. On June 28, 1974, 34 miners died and 30 were injured as a result of a methane explosion, and in part also coal dust.