Haivan Pass Tunnel
CONSTRUCTION
PROJECT
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Progress Report > Package IA - North Tunnel Section
VA Enlargement Section PKIA handing Over to PKIII/IV E and M from Block No.12 Station 0-077.10 to Supply Stect. Station 0-132.70
Khu vực mở
rộng của Hầm thông gió, điểm
bàn giao cho PK III/IV
Tháng 12/2003 - Trở về
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