Martin Marietta Materials Plant Manager: A Critical Role
Plant Manager: A Critical Role. Plant managers are responsible for all aspects of the plant: safety, maintenance, performance and personnel. "You're going to need to have a broad spectrum of knowledge," said Cliff McKeever, a 31 year Martin Marietta veteran and plant manager at the Ruby Quarry in Macon, Ga. "You need to have a good general understanding of the entire business.".