Algol: Tragedy of Power (German: Algol. Tragödie der Macht) is a 1920 German science fiction film about an alien from the planet Algol.

. The story follows the life of Robert Herne, who works in a coal mine, and his friendship with Maria Obal. While working in the mine, he encounters an inhabitant of the planet Algol who gives him a prototype machine which can provide a virtually unlimited source of power
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Devo - Working In A Coal Mine