Sample Locations:
Results:
Table 1 - Results for Testing using the AEISG Code of Practice
Table 2 - Results for Testing using the QMR Reactive Ground Test
Figure 1 – AEISG Test Temperature Plot for Sample XXX
Figure 2 – AEISG Test Temperature Plot for Sample YYY
Figure 3 – AEISG Test Temperature Plot for Sample ZZZ
Figure 4 – Samples YYY and YYY contained a large amount of visible pyrite
Figure 5 – Samples XXX and YYY reacted violently when tested as per the QMR Reactive Ground
Figure 6 – Sample ZZZ under the microscope showed trace pyrite
Under a microscope all samples were confirmed to contain pyrite (refer to Figure 4 and Error! Reference source not found.). Prior to testing as per the AEISG Code of Practice each sample was assessed for reactivity risk based on pH, carbonate and amount of reactive sulphide using the QMR Reactive Ground Test (refer to Table 1 and Table 2 for results of both tests). Testing as per the AEISG Code of Practice resulted in sample YYY testing as marginal and samples XXX and ZZZ as not reactive. The QMR Reactive Ground Test confirmed that sample ZZZ was not reactive as the sample had only trace sulphide content. The QMR Reactive Ground Test also identified coal was inhibiting a reaction in samples XXX and YYY and that these samples will spontaneously react if subjected to acidic conditions (refer to Appendix 1)
Conclusion:
Sample ZZZ was found to be marginal and samples XXX and YYY as not reactive when tested as per the AEISG Code of Practice. The QMR Reactive Ground Test confirmed sample ZZZ was not reactive and that samples XXX and YYY contain a significant amount of pyrite that is prevented from reacting by the coal that each sample contains (with sample XXX not having sufficient coal content to produce a not reactive test when tested as per the AEISG Code of Practice). Samples XXX and YYY will cause the spontaneous detonation of a blast hole in acidic conditions. (Refer to Appendix 1)
Assessed By:
Dr G. Cavanough
Date:
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Data Files:
AEISG Temperature Logs:
AEISG data.xlsx
QMR Reactive Ground Test results tables and audited temperature logs:
Rga23no id.xlxs
Templog11.xlxs