Titans of Tunneling
- Episode aired Apr 27, 2012
- TV-PG
- 45m
Take a trip underground and get up close and personal with titans of tunneling: the biggest, baddest tunnel boring machines on the planet. These monsters dig deeper and faster than ever befo... Read allTake a trip underground and get up close and personal with titans of tunneling: the biggest, baddest tunnel boring machines on the planet. These monsters dig deeper and faster than ever before, gouging holes in the Earth's crust for subways and sewers.Take a trip underground and get up close and personal with titans of tunneling: the biggest, baddest tunnel boring machines on the planet. These monsters dig deeper and faster than ever before, gouging holes in the Earth's crust for subways and sewers.