Northern Vertex Mining announces that it has, subject to regulatory approval, amended the expiry date of an aggregate total of 1,321,500 unexercised share purchase warrants from October 4, 2015, by a further six months to April 4, 2016. Pursuant to the non-brokered unit private placement that closed on April 4, 2011, a total of 1,571,500 warrants
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