Bochum, Germany to extract geothermal heat from abandoned coal mines
Mine tower, Bochum, Germany (source: flickr/ x1klima, creative commons) Construction of new buildings in a district is ongoing in Bochum,
Read moreMine tower, Bochum, Germany (source: flickr/ x1klima, creative commons) Construction of new buildings in a district is ongoing in Bochum,
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