OHS Code Explanation Guide

Published Date: July 01, 2009
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Part 36 Mining

Section 717 Chutes

In mining an inclined seam, chutes, winces and raises are developed to transfer coal or other minerals from upper levels to lower levels or to an ore car. If the ventilating pressures at these levels are unequal, ventilating air could leak through uncovered or empty chutes. Also, the end assembly (bulkhead) of the chute, which generally has a gate and lever used in loading trucks, could be damaged if ore is dumped from an upper level to an empty chute. Some ore is usually left in the chute to act as a cushion and protect the end assembly. As well, an empty chute allows rock pieces to tumble freely, posing a hazard to workers below.