KanecoImpressive how they managed to drill a 20 inches deep 18 inches wide hole in reinforced concrete without raising flags.
The ammount of planning that must have gone into this thing. It's kind of amazing. 300M in one day and no one got hurt, that's a win in my books.
According to the article, an intruder alarm went off, but since it was very early in the morning, they thought that there was no reason for a police response.