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Gigantic heat caverns in Mustikkamaa have now been filled with water (2021)

The filling of underground heat caverns in Mustikkamaa with water has been completed this week, and the use of the heat caverns for heating homes in Helsinki is a step closer.
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Science & SpaceInfrastructure & DevOps2023

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Nov 10, 2023Gigantic heat caverns in Mustikkamaa have now been filled with water (2021) by iljah174103

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