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Tunnel Wikipedia.
The method of tunnel construction depends on such factors as the ground conditions, the groundwater conditions, the length and diameter of the tunnel drive, the depth of the tunnel, the logistics of supporting the tunnel excavation, the final use and the shape of the tunnel and appropriate risk management.
Tunnel TV series Wikipedia.
Tunnel Korean: RR: Teoneol is a 2017 South Korean television series starring Choi Jin-hyuk, Yoon Hyun-min and Lee Yoo-young. 1 2 It replaced Voice and aired on cable network OCN on Saturdays and Sundays in the 2200: KST time slot from March 25 to May 21, 2017 for 16 episodes.

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