This is the moment a massive drilling machine called 'Sissi' chewed through the last few inches of rock standing in the way of the creating the world's longest tunnel. The 35.4-mile-long (57 ...
GENEVA – A massive drilling machine called Sissi is about to chew through the last few inches of rock standing in the way of the creation of the world’s longest tunnel. The expected completion today ...
Drilling in its broadest sense is any process that involves making a circular hole in a solid material or hard surface using a boring tool. With thousands of applications across industries, drilling ...
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