Billionaire Ira Rennert

Billionaire Ira Rennert

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A file photo shows American billionaire Ira Rennert attending the opening night gala for the New York Philharmonic during September 2008 in New York. Rennert owned Doe Run Peru for more than a decade through Renco Group Inc., a metals, mining and industrial conglomerate that has said it’s not responsible for the children’s ills.