Tharisa has a well-established track record of chrome and platinum group metals production, and is now on the cusp of delivering significant growth through a move underground at its flagship South African mine and the establishment of new lines of production from a major new Zimbabwean project. The company is keeping a tight rein on costs, even as rising commodities prices push margins up, and it's in that context that the shares have doubled over the past 12 months. Even so, CEO Phoevos Pouroulis still argues that the company is undervalued compared to its peers. He joins us to tell us why he thinks that, and to provide details of what will happen next