ARRB Transport Research Ltd – October 2003

Technical Summary

The Joint Coal Board (Health & Safety Trust) funded ARRB Transport Research Ltd. to investigate fatigue and performance in open cut mines. The main questions were to assess:
What is the most important contributor to acute fatigue in open cut mining? Is it length of shift (eg. 8 hours Vs 12 hours) or is it time of day (eg. circadian effects)?

What is the limit of successive day or night shifts before chronic fatigue affects operator performance in open cut mines?

What is the minimum amount of sleep required to perform adequately through a 12-hour day or night shift?

Can we use an alcohol comparison to assess cut-off levels for fatigued operators?