Interesting side note: I once heard that they were planning on using tactical nukes to blow out the Japanese defenses at the beginning of Olympic before they finally figured it would've been a horrible, horrible, horrible idea. I'm not sure if it's true, though.
It should probably also be noted that in the 50's and 60's they were thinking of using nuclear explosives to blow up a replacement for the Panama Canal, which was prone to landslides (and still is.)
The costs of excavation would be lower than 1 cent per cubic meter.
If you'll pardon the wikipedia link: WIKI!
I dug this up while doing a risk analysis of the Panama Canal against landslide failure... Imagine my surprise!!!!
edit: Perhaps the AI is trying to find a faster way to the other side of the world?
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