Removal: A conveyor belt can be seen which removes the rock from the tunnel, with enough to fill 13 Empire State Buildings.
the world's longest tunnel: Drill at the Gotthard Base under the Swiss Alps breaks through after 14 years of digging
Read more: http://www.dailymail.co.uk/travel/article-1320747/Swiss-tunnel-breakthrough-imminent-14-years-drilling-Alps.html#ixzz12Wrhro3i
http://www.dailymail.co.uk/travel/article-1320747/Swiss-tunnel-breakthrough-imminent-14-years-drilling-Alps.html#ixzz12Wrhro3i
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