Hello Tin Man
Welcome to Poms in Oz.
I haven't a clue about mining, so please bear with me.
Somebody on Poms in Adelaide posted a thread about mining in SA. Various people who know about mining in Oz helped out with links. I don't know how many might be useful to you but here is the thread:
mining - Poms In Adelaide
Also, it is worth having a chat with Richard at Workforce Solutions because I think they recruit for mines amongst other things. Please see here:
Workforce Solutions UK Website
Plus Jamie Smith at Hire A Migrant seems very clued up too. Please see here:
Welcome to Hire A Migrant
Additionally, have a chat with Neil (Keily.) Please see here:
PomsInOz Forum - View Profile: keily
Neil is headed for Perth and I think he plans to do something in the mines, and has been to some of the mines in WA (eg Kalgoorlie.) He knows a lot of sites that are not mentioned on the Poms in Adelaide link.
Neil is often in Chat in the evenings (UK time,) Look for him any time from about 8pm onwards. Click on Chat in the red bar towards the top of your screen. There are different rooms so you and neil could go into one by yourselves if you wish, so that you could discuss mining in WA without being distracted by other chat.
Best wishes
Gill