ggrasselli

301 subscribers
4:00
TBM Tunnel Boring Machine
ggrasselli
4.2K views • 16 years ago
9:52
Rock microtunneling - 2
ggrasselli
107K views • 16 years ago
7:06
Earth Pressure Balanced TBM
ggrasselli
78K views • 16 years ago
10:18
TBM 2 Hard Rock
ggrasselli
25K views • 16 years ago
9:50
TBM 3 microtunneling
ggrasselli
13K views • 16 years ago
End of Videos