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People who like California startup aims to revolutionize the tunneling with its 'non-contact', 'thermal-drilling' boring method

    Joey Koleman

    California startup aims to revolutionize the tunneling with its 'non-contact', 'thermal-drilling' boring method

    By Joey Koleman in the group Tunnel Technologies Replies (2) Last reply by Ahmet Abu Vadim
    https://www.youtube.com/watch?v=IVbDkPiY1xo Unlike conventional boring machines, the tunnel machine Petra develops crushes the rocks via thermal means, without even touching them. They must have demonstrated their technology pretty convincingly...

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