Mount Airy officials are still working on details for that Big Beaver mini-casino headed our way. State officials still have to give their final okay for the project. Officials for the Monroe County-based casino announced plans to build a multi-million-dollar resort and casino in Big Beaver on Monday. Casino officials say they still have to formally submit an application to the state before it can break ground. They have until October 12th to do that…and once that application is received, the gaming control board will review it for completeness. There will also be a public input hearing…but so far there’s no timetable on when that will take place.