Search Result For drill

The day Chilean miners were rescued – level 3

13-10-2010

On August 5, 33 Chilean miners became trapped 670 meters underground...



The day the longest railway tunnel was opened – level 2

01-06-2001

The longest railway tunnel in the world is in Switzerland. Its...



The day the longest railway tunnel was opened – level 3

01-06-2001

The Gotthard Base Tunnel is in Switzerland and it runs under...



The day people started to make the deepest hole – level 1

24-05-1970

The deepest hole made by people is in Russia. The name...



The day people started to make the deepest hole – level 2

24-05-1970

The deepest hole ever drilled is called the Kola Superdeep Borehole....



The day people started to make the deepest hole – level 3

24-05-1970

The deepest hole ever drilled is called the Kola Superdeep Borehole....