Haivan Pass Tunnel
CONSTRUCTION
PROJECT
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Progress Report > Package IA - North Tunnel Section
MT West Side Backfill under Side Drain Field Density Test (per every 2blks.) prior to Lean Concrete
Kiểm tra tỷ trọng hệ thống thoát bên bờ Tây hầm chính trước khi đổ bê tong
Tháng 01/2004 - Trở về
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