OHS Code Explanation Guide

Published Date: July 01, 2009
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Part 36 Mining

Section 708 Extractions

Subsection 708(1)

A systematic and sequenced approach to recovery of pillars is essential to ensure both the safety of workers involved in depillaring and the safety of others working in the immediate area. An uneven collapse line or roof fracture between the gob and mining area could create overhangs and cause an uneven distribution of stresses, making those areas unstable. Success in maintaining an even collapse line and systematic collapse of roof materials into the gob allows the mining and recovery of coal resources without undue reserve losses or safety concerns.

Much of the success of a depillaring operation comes from the quality of the initial ground support program, an on-going maintenance program and the operation of a systematic sequence of pillar recovery.

Subsection 708(2)

Due to the safety hazards associated with extraction operations, a professional engineer must define and certify a safe method and sequence for those extraction operations.