Case Studies

How on earth moving equipment can ISO 2631.1 be used to evaluate whole body vibration? (12-01)

Background: Exposure to whole body vibration (WBV) is a potential hazard for operators of earth-moving equipment used on mine sites. ISO2631.1 “Evaluation of human exposure to whole-body vibration. Part 1 – General Requirements” is referred to within guidance provided to obligation holders such as mine operators and equipment manufacturers. Aim: Measurements gathered from dozers in […]

Evaluating Underground Mining Equipment Line-of-sight and Augmented Vision (12-02)

Power haulage accounts for the greatest number of fatalities in Canadian, Australian, American, Indian, and Spanish mines, and is the fourth leading cause of fatal accidents in underground African mines. However, this rate is expected to grow with a move toward increased power haulage and less manual labour in Africa. Many of the fatal injuries […]

Effect of control order on steering a simulated underground coal shuttle car (12-03)

Most vehicles are steered via a first-order control for vehicle heading, such as a conventional steering wheel. A joystick which provides second-order control of vehicle heading is used to steer some underground coal shuttle cars. A desktop virtual simulation of the situation was employed to compare the steering accuracy of 24 novice participants randomly assigned […]

Directional control-response compatibility of joystick steered shuttle cars (12-04)

Shuttle cars are an unusual class of vehicle in operation in underground coal mines. A directional control-response incompatibility has previously been described in some models which are steered using a steering wheel oriented perpendicular to the direction of travel. Other models are steered via a joystick. A virtual simulation of a joystick steered shuttle car […]