A brief history of US tunnel construction
{"Image ImageDescription": "A giant drilling machine completes the world's longest tunnel beneath the Swiss Alps during a ceremony on October 15, 2010, 30 kilometres (19 miles) from one end and 2,000 metres below the mountains near Sedrun. By the time it opens for service in 2017, the 57-kilometre (35.4-mile) long Gotthard tunnel,  it will exceed Seikan rail tunnel linking the Japanese islands of Honshu and Hokkaido and the world's longest road tunnel of Laerdal in Norway, paving the way for continuous high-speed rail travel between northern and southeastern Europe.    AFP PHOTO / FABRICE COFFRINI (Photo credit should read FABRICE COFFRINI/AFP/Getty Images)", "Image Orientation": "Horizontal (normal)", "Image XResolution": "300", "Image YResolution": "300", "Image ResolutionUnit": "Pixels/Inch", "Image Software": "Adobe Photoshop CS2 Windows", "Image DateTime": "2014:02:27 00:44:08", "Image Artist": "FABRICE COFFRINI", "Image Copyright": "2010 AFP", "Image ExifOffset": "864", "Thumbnail Compression": "JPEG (old-style)", "Thumbnail XResolution": "300", "Thumbnail YResolution": "300", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail JPEGInterchangeFormat": "1002", "Thumbnail JPEGInterchangeFormatLength": "6553", "EXIF ColorSpace": "Uncalibrated", "EXIF ExifImageWidth": "800", "EXIF ExifImageLength": "545"}