I'm happy to see the plugin work amazing so far with the ranks and the mines however I would like if I could set a mine to only work for people that are in a certain rank (or above).

I'm talking about the ranks from inside the prison plugin. Not pex etc

Any info on how I can do this?

You need to use a permissions plugin with Ranks. Closing as a question. For future reference, if you want to ask a question or need support, do it in our Discord. Thanks :)