Former Orica chief Malcolm Broomhead is Australia's most connected corporate director. In exclusive data compiled for The Power Index by ASX data specialists Optimice to round off our extensive 13-part investigation into boardroom power, Broomhead, who serves on the board of global miner BHP Billiton and chairs the country's second-largest listed rail firm Asciano, boasts over $1.72 trillion in capital within one degree of separation. That is, the total value of firms overseen by Broomhead's colleagues on both boards is greater than each of the ASX's other 7734 directors. By listing how "valuable" boardroom connections are for each board member, total influence -- through formal negotiations and off-the-record conversations -- can be measured. The top 10 is dominated by BHP Billiton directors, based on market capitalisation of its Australian shares of $106 billion, according to the data compiled by Optimice and sourced from Thomson Reuters on October 26. The Power Index has allocated a "Broomhead index" of between 1 and 100 to other directors, to gauge their connectedness as a proportion of Broomhead's heft ...

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