Geothermal drilling achieves deepest well in Frankfurt, Germany
Frankfurt am Main, Germany (source: Marco Verch Professional Photography / flickr, Creative Commons) A geothermal research borehole being drilled in
Read moreFrankfurt am Main, Germany (source: Marco Verch Professional Photography / flickr, Creative Commons) A geothermal research borehole being drilled in
Read moreSkyline of Frankfurt/ Germany (source: flickr/ /xingxiyang, creative commons) A medium-depth research borehole is being drilled at the Rebstock site
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