While it may be tedious, all the answers to your questions are in the previous posts. Hopefully Jan, a previous employee of Southern Cross, or one of the guys now, or recently working, for Southern Cross. I seriously looked into working for them several years ago and submitted an application but for unrelated reasons withdrew my application. The one message I got out of this whole thread and my limited efforts is if you want to work for Southern Cross you need to be aggressive about following up on your application. The contact I was given has moved on (e.g. died, I believe) but there is his replacement somewhere in the thread. If you are in decent physical condition and like working outside in not too strenuous work, this may be for you. I still have it in the the back of my mind, if my circumstances allow it.
Hope this helps you; I expect you will get some more current info shortly.