> There was a time when people wanted to dig tunnels with nukes

The article seems to be about mining rather than tunnelling.

And the issue with the idea being? We also dig using explosives, there isn't an in-principle problem. Reading the wiki article it looks like the yields were excessive, but at the end of the day mining involves the use of things that go boom. It is easy to imagine small nukes having a place in the industry.

Digging tunnels with nukes sounds better to me than shooting them at each other!