mining industry of Swaziland
... that the mining industry of Swaziland includes what may be the world's oldest iron mine?
... that the <b id="mwHw"><a class="mw-redirect" href="./Mining_industry_of_Swaziland" id="mwIA" rel="mw:WikiLink" title="Mining industry of Swaziland">mining industry of Swaziland</a></b> includes what may be the world's oldest iron mine?