UK: The Mineral Products Association (MPA) has appointed Simon Willis as its chairman for the next two years. He succeeds Martin Riley, Senior Vice President at Tarmac, as the eighth incumbent in the role. Willis is currently the chief executive officer (CEO) of HeidelbergCement subsidiary Hanson UK. He holds experience in the aggregates and construction materials industry and has held previous directorship roles at Eurovia Infrastructure, Midland Quarry Products and Tarmac.