Farming worth less to Western Australia than mine rehabilitation?

At a recent update in Albany by Microblitz - the soil bacterial survey of Western Australia -
http://www.microblitz.com.au/
- the statistic was shown that the gross value of farm produce in the State was $5 billion a year. In comparison, the "industry" of mine rehabilitation was spending $4 to $6 billion a year. I will try to confirm these figures, but if correct, they are a reminder about the relative importance of farming to the State's economy.
The point is that we need to find our own opportunities in a farm business. Everyone else has their own challenges, so in reality, nobody really cares about farm issues. Fortunately, most farms can easily find ways for improvement, albeit from long term investment.