The film shows the miners' dedicated work on the construction of a tunnel connecting two mines—lead and zinc.
| Actor | Role |
|---|---|
 Andrzej ŁapickiNarrator | Narrator |
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The film shows the miners' dedicated work on the construction of a tunnel connecting two mines—lead and zinc.
| Actor | Role |
|---|---|
| Andrzej ŁapickiNarrator | Narrator |