(Reuters) - Gold miner Newmont said on Friday it sold its stake in Orla Mining for $439 million through the Toronto Stock Exchange as part of its divestiture program. The company disposed of the entire 43 million shares it held in Orla Mining at$10.14 per share. Last year, Newmont announced plans to divest non-core assets, trim its workforce and cut debt after its $17.14 billion acquisition of Australian firm Newcrest. Newmont was looking to unlock more than$2 billion in cash through portfolio optimiz ...