Those phone numbers are correct Jim. To call from the USA, the country code is 61, the steps are:
1. First dial 011, the U.S. exit code.
2. Next dial 61, the country code for Australia.
3. Then dial the area code (1 digit).
4. Finally the phone number (8 digits).
So the whole number for Mount Ive Station would be: 011 61 08 8648 1817
Here's their website, bit of history of the region on one of the pages, if your're interested...
http://www.mtive.com.au/index.htmCheers,