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Stuttgart21 tunnel drilling site #42244711
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STUTTGART, GERMANY - July 6, 2014: Construction site of the Stuttgart21 (S21) railway project with huge tunnel drilling machinery by specialized company Herrenknecht on July 6, 2014 in Stuttgart, Germany. Herrenknecht assembled a 120 meters long specialized tunnel drilling machine that is about to start drilling through the underground in the next days. S21 is one of the most expensive and contro
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