Athens Metro - Line 4: The excavator appeared in Evangelismos - The tunnel from Katechaki has been completed (images)
The 'Athena' tunnel boring machine reached the Evangelismos shaft, having completed a 5.1-kilometer stretch for Athens' new Metro Line 4.
How China turned a mega-project failure into a defining moment in modern engineering
China successfully rescued a stranded tunnel boring machine beneath the Yangtze River with an impressive precision of just 2mm error, highlighting its engineering capabilities.