Vast Resources PLC (LON:VAST) told investors Andrew Prelea and Craig Harvey had been appointed as directors of the board as it also updated on the Mercuria Energy Trading offtake offer.
Both will continue as chief executive and chief operating officer respectively.
In a statement after the London market close, the miner said Prelea, previously a bulk iron ore and steel trader, had managed the group's Romanian operations since they were acquired, and was appointed as chief executive following the resignation of Roy Pitchford at the end of 2017.
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Harvey was at Harmony Gold, where he managed the mineral resource function on various operations and was involved in due diligence on acquisitions.
He joined Vast Resources as a consultant in 2013 and became chief operating officer in March 2017.
"I have great pleasure in welcoming Andrew and Craig to the Board," said Brian Moritz, chairman.
"Both have demonstrated their expertise and commitment to Vast over several years as part of our senior management team, and have contributed substantially to the improving performance of the Manaila mine. I believe that their appointment to the board will enable them to further shape and advance the company's strategy moving forward."
Separately, Vast said the position on the award of the association licence to mine at Baita Plai, in which Vast has 80%, remains unchanged. A recent meeting with officials in the Ministry of Economys revealed good progress was being made, it said.
On the previously announced offtake offer with Mercuria, in which the latter would make US$9.5mln available to the company which would be drawn down in two tranches: US$4mln before March 5, Vast said good progress has been made.
However, as a practical matter completion by 5 March 2018 now appears not to be achievable, and the company wishes to inform the market that it, and Mercuria have set a new target date of 9 March 2018 for completion, the company said.