Yarrie mine
... that, when BHP Billiton awarded the contract to manage the Yarrie mine to Ngarda Civil & Mining, it was the largest-ever mining contract awarded to an Australian Aboriginal-owned company?
... that, when <a class="mw-redirect" href="./BHP_Billiton" id="mwE74" rel="mw:WikiLink" title="BHP Billiton">BHP Billiton</a> awarded the contract to manage the <b id="mwE78"><a href="./Yarrie_mine" id="mwE8A" rel="mw:WikiLink" title="Yarrie mine">Yarrie mine</a></b> to <i id="mwE8E">Ngarda Civil &amp; Mining</i>, it was the largest-ever mining contract awarded to an <a class="mw-redirect" href="./Australian_Aborigines" id="mwE8I" rel="mw:WikiLink" title="Australian Aborigines">Australian Aboriginal</a>-owned company?