Thanks for your comments and insights! Please correct my edits where you know them to be wrong. I was going off of the most recent aerial imagery I could find, but sometimes that does not show the level of detail needed to make these calls of disused vs active vs abandoned. I probably should have been a bit more cautious.

I agree with your interpretation of abandoned vs disused.

If you're local, come to the SLC Mappers meetup sometime! Keep an eye on osmcal.org for the next meetup.