Yuleba Website Optimisation

We have a small quarry operating in Southern Queensland (Australia), the quarry has a web site [login to view URL] which was set up in 2005. The quarry is located near the townships of Roma, Miles, Chinchilla, St George, Condamine and Mitchell. The quarry produces sand, aggregate, gravel, road base and quarry materials. Currently if we google search any of these towns + either sand, aggregate, aggregates, gravel, road base or quarry we do not show up in the first page of the google search usually there is a list of yellowpage, truelocal or similar sites. We require some one to optimise our web site to elevate it to being within the top 3 sites on a google search.