Excerpt from Compressed Air Magazine, Vol. 19: January to December, 1914
The table gives the amount of air provided for ventilation during the driving of six long and deeply overlaid tunnels.
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PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000. Artikel-Nr. LW-9781334176319
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PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000. Artikel-Nr. LW-9781334176319
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