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218:(中铁一局). Its construction was expected to take five years, but because of extreme geological conditions along its alignment, completion took place on 28 April 2020, after 12 years of construction. As another tunnel,
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The justification of this tunnel is the geopolitical importance of the Dali–Ruili railway. While there were already gas and oil pipelines linking the
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Railway tunnel in China which connects to the China-Myanmar border
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254:. Xinhua Net. 26 June 2019. Archived from
194:(大柱山隧道) is a 14.484 km (9.0 mi)
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69:Learn how and when to remove this message
32:This article includes a list of general
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252:"１１年！"最难掘进隧道"大柱山隧道平导贯通"
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