Koegas mine
... that the Koegas mine was once the largest producer of blue asbestos in the world?
... that the <b id="mwBRo"><a href="./Koegas_mine" id="mwBRs" rel="mw:WikiLink" title="Koegas mine">Koegas mine</a></b> was once the largest producer of <a href="./Riebeckite#Crocidolite_(fibrous_riebeckite)" id="mwBRw" rel="mw:WikiLink" title="Riebeckite">blue asbestos</a> <i id="mwBR0">(example pictured)</i> in the world?