Haybat Sultan twin tunnels & approach roads
- Location : Erbil Governorate, Erbil-Koya-Sulaymaniah Highway
- Total Length : 5.2 km (2*2600 m)
- Excavation Area : 110 sq.m
- Main Lithology : Shale, Marl, Mudestone, Sandstone
- Excavation Methods : Mechanical Excavation
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