The Greenvale Joint Venturers, Metals Exploration Queensland Pty. Ltd. and Freeport Queensland Nickel Incorporated, use ten Herreshoff roasters, for the reduction of ground lateritic nickel and cobalt containing ores._x000D_
Initially the roasting section of the plant limited production, due to high down time._x000D_
The use of technology developed and adapted over a number of years has achieved significant increase in on line time and a minimization of costs.