Stream sampling is essential for the performance assessment of a mineral pr
ocessing plant. This process generates errors that are caused by stream mat
erial heterogeneity and incorrect cutter features. To control the sampling
process efficiently, it is very important to evaluate and minimize the samp
ling errors. The objective of this paper is to introduce two expert systems
for stream sampling in mineral processing plants. The first one is intende
d to inspect the correctness of sampling operations. It is called Sampling
Correctness Inspector (SCI). The second one is destined for the evaluation
of sampling errors. It is named Sampling Error Evaluator (SEE). These exper
t systems are validated successfully. (C) 2000 Elsevier Science Ltd. All ri
ghts reserved.