Search Result For drilling
The day Deepwater Horizon sank – level 3
22-04-2010Deepwater Horizon was a modern oil drilling rig located in the...
The day the longest railway tunnel was opened – level 2
01-06-2001The longest railway tunnel in the world is in Switzerland. Its...
The day the longest railway tunnel was opened – level 3
01-06-2001The Gotthard Base Tunnel is in Switzerland and it runs under...
