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Busan Subway Line2 (C230) (Suyeong-gang riverbed tunnel)
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Seoul Subway Line 9 (C911)
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Seoul Subway Line 9 (C910)
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Gwangju Subway Line 1 (C1)
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Gwangju Subway Line 1 (C1)
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Seoul Subway Line 7 (C720) (Alteration design according to waterproofing method)
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Comprehensive Railway Testbed
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Gimpo Metropolitan Rapid Transit (C5)
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Jungang Line (Dodam ~ Youngcheon, C2)
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Railway Connection between Incheon International Airport Terminal 1 and 2
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Boseong ~ Imseongri Railway (C2)
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Westcoast Line (Hongseong ~ Songsan C4)
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AREX Connection Facility Expansion Construction
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Railway Relocation for Yeongju Dam Submerged Districts
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Great Train Express (GTX) Suseo ~ Pyeongtaek (C9)
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Honam High Speed Railway (C1-2)
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Honam High Speed Railway (C1-1)
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Eastcoast Line (Busan ~ Ulsan) Railway (C3)
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