** Shares of De Grey Mining Ltd rise as much as 3.9% to A$0.080, their biggest intra-day pct gain since June 11
** The gold-focused explorer expands exploration potential by signing Letter of Intent with Novo Resources Corp
** Under the LoI, Novo has the right to explore De Grey’s project for gold-bearing lag gravel deposits for an initial three-year period
** As of last close, De Grey stock has fallen more than 38% this year
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