John Walmsley, 66, a thirty year veteran of the oil and gas industry whose career includes stints at Enterprise Oil and Hardy Oil, becomes chairman.
Santiago-based Max Oemick, 48, who is a major shareholder in Orosur following its merger with Fortune Valley in 2010, joins as a non-executive.
Sergey Kuznetsov, 32, the third new non-executive board member, has over ten years of corporate finance and consulting experience mostly in the mining industry.
In addition, Orosur has appointed Gustavo Licandro as interim chief financial officer. Rafael Vergara, who took over as interim chairman in May, has stepped down to focus on his own interests.
Ignacio Salazar, Orosur's interim managing director, said: "I am delighted to welcome John, Max and Sergey to the board and Gustavo to the executive team.
"They bring to the company an impressive experience that will be instrumental in reinvigorating the company and helping Orosur to fulfil its targets, extend the mine life and grow beyond that."
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