Graphite miner and producer StratMin Global Resources has appointed Brett Boynton as its new chief executive officer and an executive director of the company with immediate effect.He will replace Manoli Yannaghas, who will step down from his role after a handover period, in which he will work closely with Boynton."The company is in an enviable position as one of very few graphite plays actually in production," Boynton said."Our initial focus will be on further optimisation of the current operation but we are already working on expansion opportunities. The Australian market is really focused on graphite at the moment with successful companies achieving excellent valuations," he added.Boynton is currently the head of silicon-focused industrial minerals company Agripower Australia and has a background in investment banking.As of 11:45 BST, shares in StratMin were trading 1.67% lower at 5.15p.