On the struggle of the Donbas miners to eliminate the liquidation in the coal industry.
| Release Date | December 31, 1930 | |
|---|---|---|
| Status | Released | |
| Original Title | Подземное солнце | |
| Runtime | — | |
| Budget | — | |
| Revenue | — | |
| Language | — | |
| Original Language | Russian | |
| Production Companies | — | |
| Production Companies | ||