Well after having read this, the good, the bad, the ugly, and the native gripe

The good: Some very creative ways of using the city. I enjoyed what they did with the Berkley Pit both magically and technically. Some of the transportation options just screamed amusement if you got some city slicker runners out for an adventure. Under Butte and the gangs pretty interesting as well.
The Bad: Writing was very dry. Didn't feel like it was a local talking, but more like a guy who came in, did a survey and got out. History wasn't well written as so much of Butte is from over 100 years ago and wasn't covered, it needed to be fleshed out more.
The Ugly: Some confusion in this book. Is Silver Bow County or Butte the reservation? Where's the local police as it seems like the SDF and Wildcats are the law in the town?
The native Montanan gripe: Shipping ore up the Helena for a flight out of town? Helena's got a regional airport as well. Bozeman has the international. Everyone thinks that state capitals are the big and important, whereas for us, it's a pretty bland little town that no one really pays attention to.
Overall: A good place to send your runners if you want to try some different kinds of runs and throw some unique challenges at your players.