Geological results of the Campo Solario near-surface bore according to the Rail Tunnel through the Alps study commission
Geologische Resultate der Flachbohrung Campo Solario gemäss Studienkommission «Eisenbahntunnel durch die Alpen»
The Gotthard Base Tunnel
The Confederation moots the idea of a «Gotthard Base Rail Tunnel», and commissions Elektro-Watt to develop a project.
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