Why are mills toppling over at a shocking rate?

Why are New Zealand mills toppling over at a shocking rate? Just this week Carter Holt Harvey anounced plans to close its Tokoroa plywood manufacturing plant and import product fom overseas. It will mean almost 120 jobs go. The company's also shutting down its Eves Valley sawmill near Nelson with the loss of 140 jobs. The Kinleith Pulp and Paper Mill in South Waikato, Winstone's Kariori Pulpmill and Tangiwai Sawmill have also all closed in the past year. Red Stag Timber processes lumber for New Zealand & export and operates the largest sawmill in the southern hemisphere, CEO Marty Verry spoke to Lisa Owen.