This report has conducted the fundamental analysis of two ASX listed companies, that are, BHP Billion and Rio Tinto, leading mining companies within Australia. It has been analyzed on the basis of top-down analysis that overall macro-economic factors support the future growth of the mining companies. Also, the improved financial performances in the year 2017 as compared to previous year depicts that they are expected to provide larger returns in the future supported by the mining boom experienced by the country.