![]() | Nagdhunga Tunnel Construction Latest Update || Nagdhunga Tunnel Construction New Update Süre: 8:04 | Boyut: 18.46 MB |
![]() | Shield process of hydropower station tunnel- Good tools and machinery make work easy Süre: 0:12 | Boyut: 468.75 kB |
![]() | INCREDIBLE SWITZERLAND BIGGEST TUNNEL BORING MACHINE DIAMETER-HOW DOES TUNNEL BORING MACHINE WORK? Süre: 11:20 | Boyut: 25.94 MB |