Greg Runge has more than thirty years experience in the Australian minerals industry, principally in senior management of industrial minerals businesses. He was Managing Director of Australia’s largest diversified lime and limestone company, David Mitchell Limited prior to the successful unsolicited takeover by Unimin in 2003. Greg has served as President of the National Lime Association (1993-95), a member of Standards Australia Committee BD 27 - Lime (1993-96) and represented Australia on the Executive Committee of the International Lime Association.

Greg holds a Bachelor of Engineering Degree in Mining (University of Queensland), and is a graduate of the Executive Management Program at the Australian Management College, Mt. Eliza and the AICD Company Director Diploma Course.