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Ji-Yu Doko's files
Korea ADD Tunnel Robot
By Ji-Yu Doko in the group Tunnel TechnologiesKorea ADD (Agency for Defence Development) Tunnel Robot photo copyright ADD
Jeju Tunnel Korea
Jeju Tunnel KoreaDaegok ~ Sosa Line Tunnel Penetration
Daegok ~ Sosa Line Tunnel Penetration photo by Korea National Railroad Corporation
KRRI Survival Tunnel, Survival Passage - Unfolded
KRRI Survival Tunnel, Survival Passage Unfolded Korea Railroad Research Institute
KRRI Survival Tunnel, Survival Passage - folded
KRRI Survival Tunnel, Survival Passage Korea Railroad Research Institute
KRRI Survival Tunnel, Survival Passage
KRRI Survival Tunnel, Survival Passage Korea Railroad Research Institute
EM Korea TBM Techology
By Ji-Yu Doko in the group Tunnel walk and talk
Introduction to Tunnel Construction.png
By Ji-Yu Doko in the group Tunnel Technologies
cover tunnel photo by: Matt Brown from London, England / CC BY
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