This paper discusses the implementation and potential limitations of the method for estimating sampling and analytical errors of multiple source mine output blended into a shipping product, described by Everett and Ziegelaar (2010)._x000D_
The practice of quality measurement varies between iron ore miners. The common objective is to monitor effective resource utilisation and control of product quality to customers._x000D_
A flow diagram is given presenting the various options used by iron ore mine operators and the merits of the different options are discussed.