I would argue that mining is non-renewable and finite. We need to be finding ways of making profits from other things than mining as well as finding renewable sources of energy. In a few decades it will all be gone and then what will we do?
The greens have also become more than about the environment. They have become the party that labor has strayed from - for low and middle class families. I doubt the Greens will ever lead the nation, but they are becoming a powerful voice.