Abstract
Several methods exist for measuring line-of-sight (LOS) associated with the operation of operator controlled mobile equipment but there is no consistent criteria used for all machine types or operating scenarios. Moreover, the standards that do exist are not particularly applicable for carrying out LOS analysis on mobile mining equipment. This paper describes a new method to evaluate LOS associated with the operation of mobile equipment, the LOS boxplot. The human simulation program, Classic JACK was used to analyse LOS from the operating position of five different load-haul-dump (LHD) vehicles, typically used in underground hardrock mining. The LOS boxplot method was able to demonstrate LOS associated with five LHD vehicles, and it was able to illustrate LOS improvements associated with the design modifications tested. The examples provided also show the applicability of the method for evaluating operator LOS from other types of heavy equipment.
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