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People who like Robbins Crossover holes through in the Andes in Chile

    Dave Anderson

    Robbins Crossover holes through in the Andes in Chile

    By Dave Anderson in the group American Tunneler Replies (2) Last reply by Giacomo Marcelli
    A Robbins 4.6 m (15.1 ft) diameter Crossover machine holed through in the Andes Mountains of Chile in the last quarter of 2021. The XRE TBM bored a 3.3 km (2.1 mi) long tunnel for Chile’s Los Condores Hydroelectric Power Project (HEPP) and...

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    cover tunnel photo by: Matt Brown from London, England / CC BY

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