Executive Summary Differences. Coal Mines Explosion Research Report 1990

Executive Summary Differences. Coal Mines Explosion Research Report 1990

Executive Summary This is the Original

2-execitive summary (1) Ministerial Report

Wholesale changes have been made to the Executive Summary from the Initial Report.

These paragraphs were inserted into the first page.

It was planned to produce an integrated report with contributions by the members of the project team.

Qualifying Notes

This report consists of work by researchers attempting to use skills and concepts not available to the Warden’s Inquiry of 1986. Expert opinions in the three countries visited, without exception, acknowledge that it is very difficult if not impossible to determine the path or paths which the explosion took. The presence of so many 4-way junctions and the unpredictability of the behaviour of explosions when passing along such junctions present a task of major magnitude in attempting to model any explosion, or indeed in trying to decide in which direction the explosion passed through the Moura No.4 Mine roadways.

Recognising the reaction of skilled experienced investigators of coal mine explosions in other countries , it is not surprising that there were difficulties in assembling this report. It is emphasised that individual authors do not necessarily agree with the views of other authors. That will become abundantly evident to the reader and serves to highlight the complexity attached to analysing the available evidence in the network of roadways affected by the explosion.

The contributions by various authors have been incorporated in their entirety into this report to give full expression of their views. The only exception to this modification of the information supplied by the authors to achieve clarity and consistency in the description of various locations at Moura No 4 Mine

In instant violation of this statement, the Final paragraph of the Initial Report has been altered.

Original First Sentence

Because of concern that the impact of rock on rock or rock on steel may have provided the ignition source, reports of earlier disasters overseas have been examined. These are discussed in Chapter 4

Ministerial First Sentence

Whilst the flame safety lamp was considered the probable source of ignition there remained concern that the impact of rock on rock or rock on steel may have provided the ignition source. Because of this concern reports of earlier disasters overseas have been examined and are discussed in Chapter 4

Original

During this period techniques for investigating mine explosion have been improved. This Report shows that there is a need for improvement of investigation procedures in Queensland should such a disaster occur again.

Ministerial

During this period techniques for investigating mine explosions have been improved and this may have enabled conclusions to be drawn regarding the source of ignition.

Then the new Summary includes 6 new Precis of Findings.

Number 2 States

2 Source of Ignition

The work carried out has not resulted in any better understanding of this. It is still not possible to confirm or deny that the flame safety lamp was the source. However, it can be stated that testing at SIMTARS has shown that the damage to the Moura No 4 Mine safety lamp gauzes could not have been caused by heat from a source external to the lamp. This project has not produced any evidence to challenge the Findings of the Mining Wardens Court